Speaking of water, APB uses like 20 different standards for creating this. Every map does it differently and it has a lot to do with the project being old and a lot of hands having worked on the environments over the years.
Creating good water is hard. I think the water on Hostile Waters (island shores) is probably the best I've personally been able to get it, but the problem with it is that it is VERY time consuming to create as every wave is a manually placed mesh aligned with the terrain, and the caustics effect could be better as well (unfortunately grid mapping is a no-go for large resolutions).
Still, the bright, near-neon colored water seen in some of the older clips is quite dated indeed!
I shared this on a few Discord communities(which have a fair amount of people who are C&C fans as well) I am part of, so hopefully that'll bring in some more players. I would agree on a updated trailer since these ones do contain a few old assets. The Mammoths in particular and water do particularly stand out, that might turn off a few people.
I think that we could reach more people if we got this game in the hands of some influencers/YouTube personalities. Some of those guys get a mad amount of views which could contribute to the overall playerbase.
Anyhow, I agree with your sentiment, notable updates on both the engine front (to appeal to potential developers), as well as the games, should be broadcast a little more. A few simple link cross-posts is really all that is required.
I do not really think the graphics are that bad for APB (in most cases), and I've first hand demonstrated the engine itself can handle quite a bit of pure model and texture detail work. I imagine if we had better lighting, most graphical criticism will go away since at that point W3D games could pass for stylized graphics - which, at least in my personal usage, is the case.