Looking at the 3DS eshop there's a new app for $1 that let's you use your 3DS as a controller if you don't own Smash on the 3DS but want to use it on the Wii U version. I'll be amazed if it sells 1,000.
Diddy was never a problem, why did they Nerf him again.
But everyone I listed in the buff/nerf thread I made is unchanged, except for Falcon because his up air is SLIGHTLY weaker now.
He was really good until the update a few months ago. Then he was still pretty good, but not the best. Now he's even worse apparently.
He was never the best character in the game anyways. Infernoomni went over this.
tl;dw Diddy isn't (er... wasn't) good, you're just bad.