It should work on wiiu, but ive personally never tried project m on a wiiu. Most hacks should be compatible, but to be on the save side remember to back up your mods. For the most part this pack has everything from the latest Project M and BrawlEX, except for roy and mewtwo's sfx, but that'll change in a future update. I'm sure there are other packs with hd textures. So far n64 final destination is being made in HD and should be ready by the next update, but as far as HD characters go, no. But you should check out the Smash 3 pack:
http://forums.kc-mm.com/index.php?topic=63270.0 there you will find HD characters!
Post Merge: August 25, 2014, 11:29:04 PM
Yes, the next update will have fixed sfx. Thanks, I'm glad you like it

Thank you. I downloaded it, but the game froze on me; all I did was pick Young Link, a random level 3 computer to face, and the version of final destination that was shown in this thread. Is this a normal occurrence?