The poly limit can be increased but only with a full engine modification,
i actually think that would be awesome, playing ET mod thats feels and looks completely different is awesome, i know it is allready different enough, but it still has that ET'ish feel to be honest, hmmm... maybe is because of the models and the model's hip weopon position...,
but my point is, im really into old stuff being revamped, seeing the devs improving the WET-engine, is like seeing a old mustang classic being transformed into something new... infact i really like to live in very old houses, because if its revamped and upgraded and stuff, it makes you look like you a skilled carpenter, if you visit europe all you see is old buildings, very old.... but very improved and revamped, thus very exclusive looking buildings,
but my point is, i really dont mind the devs using the old game engine, because people will c how improved TCe is, compared to ET, it shows evryone how skilled the developers of the mod are,
evryone can make amazing things on a new game engine, but not evryone is able to make amazing things on a old game engine, making something awesome on a very old game engine will only highlight the developer's skills imo.