Lol, sorry for the wait.
Personally, I prefer Ice Slasher and Danger Wrap over Crash Bomb. I just see no use for Crash Bomb at all. Danger Wrap is really good for trapping people and hitting people in the air.
As for Up Specials, they all got their use. Beat is a great recovery. I can see Rush helping in Doubles matches, and Tornado Hold hurts!
I'm neutral when it comes to Metal Blades and Shadow Blades lol. Glide tossing metal blades is fun, and shadow blades can combo. Just don't use hyper bombs lol.
Yeah, Skull Barrier is good. I never used Plant Barrier so i can't really say anything about that haha.