NVN is over two decades old at this point, of course the graphics aren't great. I personally also aren't a huge fan of the semi real time combat system, as it really messes with some classes. Modding (along with computer games in general) was also nowhere near as big as it is today. But despite all that it's still alive, due to its campaign editor. I'm sure BG3 will be modded to death with this (not literally ofc).