Dangit, I thought I made a more detailed reply to this. What you have to do is first install RIMP with the 2.2 adaptation files, then install TCM2.0 separately. Copy/paste all of TCM2.0's files to the appropriate RIMP folder,
but do not overwrite.
You'll then have to modify the following files in order to make it all work properly (I think I labelled all of the lines/sections that I've changed for TCM, specifically to make it easier to do this):
- common\cultures.txt has a partial_ culture in each culture group (so that conquered provinces have to go through a "partially assilimilated" phase). You'll have to copy these lines over or some of your provinces will end up having noculture during the game (though thankfully this doesn't appear to have any real negative effect). I've also made some changes to Roman and Illyrian names (courtesy of The_Guisgard), but these aren't really needed.
- common\event_modifiers.txt, as you already noted. All the lines are pretty clearly labelled.
- common\ideas.txt has a few little modifications, but they aren't really necessary.
- common\static_modifiers.txt also has a number of little changes. Also note that 2.31 has introduced a few extra entries, so the RIMP files for 2.2 won't take advantage of those. I recommend you just use my file for the moment.
- events\flavor.txt is very different. Just use the RIMP version.
- history\characters\*.* only really need to be added if you want to use the Roman names from TCM. The character file for Pyrrhus just beefs him up a bit to make him more of a challenge to early Rome, so that's optional.
- history\provinces\*.* - just use RIMP's files.
- history\wars\Pyrrhic_Wars.txt - use RIMP's version.
Now, I'm
pretty sure that should be all. I haven't actually tried all this yet (I still want to make a minimod-TCM version for all of the major mods out there, but I'm still waiting on the new RIMP before doing that one), but those are the only real conflicts that I can see.
Good luck! Let me know if anything needs further clarification.