I was planning on making DXTC optional in my games. Such as, if it works, enable it and have higher res textures, if it doesnt, sorry you'll have to use lower res texture! Better than not using them at all. But now, i dont think i have a problem with texture memory so i wont use it for my current project. I dont see why you guys dont make it optional like that. If need be, make a 'test app' that users can download to see if the DXTC works or not for them if you think it will make a crucial difference in the game gfx.