First of all, I love this mod, and I've been enjoying playing it; it really adds a lot to the game. 
I've noticed that I like the way that the buildings are set up in HIP/PB, but I still can't help but think that Temple Holdings are underpowered in comparison.
Castle holdings are useful for troops now that each building gives a boost to retinue size. I never felt much need to spend on buildings, since my retinue troops were generally more powerful. But with that change, and the inclusion of ClearCombat, it actually makes me want to spend money on constructing castle holdings and their buildings.
City holdings provide plenty of money, as before. But universities seem far too expensive compared to the Centers of Trade line, which grant seven times as many technology points in addition to the spread rates, gold, and other smaller bonuses.
Temple holdings seem to be in a bad position from the start; their only real bonus in terms of money is the four extra base gold they have. In terms of troops, they have fewer buildings and no cavalry. They have a small tech bonus (which point for point is more expensive than saving up for a Center of Trade) and have piety (which really does not seem to impact very much.) I think the problem with having a holding that is a balance between two extremes (troops and money) is that there seem to be little middle ground between being worse than the more specialized holdings is that it won't perform either function that well, or it will perform it well enough that the player would be indifferent to specialization. Worse yet, the player cannot play as a theocracy, so there is even less incentive to build temples as opposed to cities (as a Republic) or castles (as a noble.)
I think a better solution might be to have the Temple have its own specialty, such that focusing on them might be a good strategy on its own. My idea was that maybe Temples could be the hubs for advancing technology as opposed to cities/centers of trade, through the following:
1.) Eliminate the University line for cities (very expensive for a relatively small benefit) or rename it as a building that produces some amount of gold and some amount of economic tech points at a much lower price tag (maybe a Guild of some sort.)
2.) Remove the tech point bonuses for centers of trade; keep the spread and gold as is, and keep the price high. (It should remain a high ticket item for historical flavor, as a way to burn excess gold, and to incentivize building it in the capital for spread.)
3.) Make up for the tech point reductions in other buildings by placing them into Temple University line. Perhaps the cost in gold for the building would remain relatively low as it is now in order to compensate for the expense of building a new Temple holding.
I think there is enough historically in terms of religious involvement in education and universities in this time period to justify such a choice, along with the fact that the Learning stat is tied to the religious member of the Council in-game. The only concern I might have would be that counties with Centers of Trade might not be as advanced as before, but I think the spread bonuses would be significant enough on their own that this would keep them from falling behind, and still allow them to be major vehicles for the spreading of tech.
Anyway, just wondering what anyone might think of this.
I've noticed that I like the way that the buildings are set up in HIP/PB, but I still can't help but think that Temple Holdings are underpowered in comparison.
Castle holdings are useful for troops now that each building gives a boost to retinue size. I never felt much need to spend on buildings, since my retinue troops were generally more powerful. But with that change, and the inclusion of ClearCombat, it actually makes me want to spend money on constructing castle holdings and their buildings.
City holdings provide plenty of money, as before. But universities seem far too expensive compared to the Centers of Trade line, which grant seven times as many technology points in addition to the spread rates, gold, and other smaller bonuses.
Temple holdings seem to be in a bad position from the start; their only real bonus in terms of money is the four extra base gold they have. In terms of troops, they have fewer buildings and no cavalry. They have a small tech bonus (which point for point is more expensive than saving up for a Center of Trade) and have piety (which really does not seem to impact very much.) I think the problem with having a holding that is a balance between two extremes (troops and money) is that there seem to be little middle ground between being worse than the more specialized holdings is that it won't perform either function that well, or it will perform it well enough that the player would be indifferent to specialization. Worse yet, the player cannot play as a theocracy, so there is even less incentive to build temples as opposed to cities (as a Republic) or castles (as a noble.)
I think a better solution might be to have the Temple have its own specialty, such that focusing on them might be a good strategy on its own. My idea was that maybe Temples could be the hubs for advancing technology as opposed to cities/centers of trade, through the following:
1.) Eliminate the University line for cities (very expensive for a relatively small benefit) or rename it as a building that produces some amount of gold and some amount of economic tech points at a much lower price tag (maybe a Guild of some sort.)
2.) Remove the tech point bonuses for centers of trade; keep the spread and gold as is, and keep the price high. (It should remain a high ticket item for historical flavor, as a way to burn excess gold, and to incentivize building it in the capital for spread.)
3.) Make up for the tech point reductions in other buildings by placing them into Temple University line. Perhaps the cost in gold for the building would remain relatively low as it is now in order to compensate for the expense of building a new Temple holding.
I think there is enough historically in terms of religious involvement in education and universities in this time period to justify such a choice, along with the fact that the Learning stat is tied to the religious member of the Council in-game. The only concern I might have would be that counties with Centers of Trade might not be as advanced as before, but I think the spread bonuses would be significant enough on their own that this would keep them from falling behind, and still allow them to be major vehicles for the spreading of tech.
Anyway, just wondering what anyone might think of this.