Dependency on X-COM graphics makes the game harder to install. And there are lots of other reasons - for example we do not like our project to be treated as just X-COM addon, such misunderstanding offends and discourages the developers a lot. Not to mention some legal uncertainity.
Why do u guys want the ufo2000 to be so independent from the original Ufo Enemy Unknown ?
Just imagine the differences between X-COM and TFTD. It is essentially the same engine and the same gameplay. But the graphics is different and it has more maps, more weapons and aliens variety, more different missions (not so many actually but anyway).
I started playing this game only becase it has heart of the old game ... (btw i am a big fan of classic ufo, and for me it is the best game ever) Dont try to make the game different
I think that UFO2000 should be a different game, but it should belong to the same class as X-COM and TFTD. For example Apocalypse is really a different game, it differs from X-COM and TFTD much more than UFO2000 would probably ever be