No I meant any ruler that is in your prison cell. Should make some things rather....interesting.
There is a decision for that already, I'll check if there might be something blocking it for foreign rulers.
offering more options for players to select before starting the game certainly *seems*easy
It is, but that doesn't mean it's the best solution. The current rate is perfectly fine. Trust me it is. The problem with counties converting is strictly because of low MA which reduces conversion time from 50 years to a couple of months.
but there isn't even an option to try to get him back. And, in another situation, I'm King and I want one of my vassals vassals vassal to let one of my Dukes (who has been in his prison for over a decade) go, but there is no option to do that. I think the easiest way to fix these issues would be to allow the player to always have the option to ransom, or maybe a plot to free people in jail
Ah... I'll have to look into that. Would have to be two separate decisions, one for vassals, the other for dynasty members.
In the meantime the HRE usually controls much of Europe and the Romans have been knocking the Muslims around for so long theres not much chance of a revivial
I've never seen HRE "controling much of Europe". I've seen them ONCE take france for about 10 years. Byzantium usually crashes and re-emerges. I wouldn't call them OP.
A straight adoption of the megawar system wouldn't work well, but I still think there needs to be an option for vassals to decide not to give their Lords any troops or even to decide to help the enemy fight against them if that is in their best interests
They can withold troops, and they do. In claimant wars they can also join the enemy if he's supported by a faction from inside the realm.