Finally got around to completing a game with this mod. Overall, it definitely makes the whole gameplay experience a lot more lengthy and enjoyable, especially the future eras in the late-game. There are a few things I came across while playing, which I'll list here.
- AI speedrun through the prehistoric eras for whatever reason. That rapid tech advancement seems to end the moment they enter the ancient era, which I found odd. After that, they slowly fell behind in technology.
- Future improvements are pretty useless. Farms produce a lot of food when at max (19 food I believe?), even more with wheat. The genocentres are actually outperformed by farm improvements. Even if they improve wheat resources and are next to cities, they are still produce less. Hydroponic domes and arcologies are equally useless as they can't improve the same resources as genocentres and don't really produce anymore food. I feel like a buff to these improvements might make them worth building in the late-game (not to the point it becomes unbalanced, obviously).
- Laser and Railgun SAMs models don't appear for whatever reason and end up causing my game to crash. It might be some interference from other mods, will edit this if that's the case.
- Some of the icons in the technologies in the tech tree don't seem to appear. Once again, could be from one of the other mods I run, but not sure.
- Line infantry from the Enlightenment era have the same model as the field guns. Also not sure if this was intentional, but the Tercio doesn't upgrade to line infantry at all. Applies to the Musketman to Skirmisher upgrade as well. (Might be the same with the knight to whatever the mounted unit is in the Enlightenment era. I don't usually have mounted units, so I'm not sure.)
Overall, things seem to be flushed out to an acceptable level, definitely makes me want to play with VP more. I think if the above are addressed and (possibly) fixed, you'll have yourself an excellent extension of the tech tree. If I could make these fixes myself, I would. Unfortunately, I'm not really familiar with how XML/Lua or any of the other technical things work, so I'm listing these things here. Other than that, I think this is a great mod and I'm sure it has a lot of potential. Keep up the good work!
Oh, and before I forget,
I don't think the AI knows how to manage Health & Plague at all. While it isn't really that big of an issue, it does put AI at a disadvantage when competing against the player in terms of population growth and other things I'm probably forgetting to mention. The Health & Plague systems is also the issue for bonus resources like wheat and sheep being classified as strategic resources (for whatever reason).