Without the time to check the countless pages i have missed over the last weeks, let me toss in here some suggestions. If they were already said, oups, accept my apologies.
I would like if we could mod every tech tree (land, naval, trade, etc), and if we could create "specific" tech trees for certain nations. For example, imagine if everyone, except for the turks, would get their arquebuses (fire phase) at LT 9. The turks, would get it, say, at LT 8. Of course, we would be able to create multiple tech trees which would have diferent dates/levels for everything we could possibly want, ranging from CRTs, sprites, forts, buildings enabled, etc.
I would also like to see an option that would forbid the AI to sign any sort of peace proposal. Say, an option like the already existing "Furious" option. When turned on, via event, the AI would always refuse any sort of peace proposal. However, when the AI's war exhaustion or warscore reach a certain level, or if the player captures certain key provinces, or any other sort of condition, the AI would receive an event which would enable them to accept peace proposals. This would help, to a certain extend, the extremely dumb AI, which is so easy to peace/deal with. It would also be good in certain key scenarios where the AI should keep fighting in order to get a bigger booty (for example, in the MES mod, where the mongols kept peacing for a few provinces instead of keep on fighting - or in normal EU2 itself, with Spain and the Incas for example, with Spain always peacing for a few provinces instead of going for annexation).
Also, i am most likely going to ask this for the second or third time already, but is there a complete,
updated list of what is possibly in or out? (i have been pointed twice to the same post around page 10 if memory serves but such post hasnt been updated for decades)