I understand that there are not, but I really wish there were more advisor slots, and therefore more advisors. An increase to 5, atleast, if not 6 or more. 6 is what I would ask for. A full court of 10 or something might get a bit too large. It would allow you to truely define your nation in part by your advisors, taking 4-5 colonial advisors, to match your colonization ideas, and really run out ahead in that area.
I also agreed with the person talking about the lack of advisors when the countries reach low numbers. I understand that it is working as intended, but I wish it was a bit more forgiving. If you are the only country in your tech group there are only 3-4 advisors left. If there were a minimum, say 10 advisors, for each tech group, that would be tremendously helpful.