I honestly don't know what to say about this...Yes, about Classic Mode... I liked the "choose your path" aspect of 3DS Classic Mode so I would keep that in Classic Mode so you always get to choose your opponents... but I also would have made Classic Mode more like how it was in Smash 64 and Melee. This is how I would have done it.
Stage 1 - 1 vs 1 regular battle
Stage 2 - 2 vs 2 team battle
Bonus 1 - Break the Targets (you choose your target course)
Stage 3 - 1 vs 1 regular battle
Stage 4 - 3 vs 1 giant battle
Bonus 2 - Home-Run Contest or Target Blast or Trophy Rush (you choose your mini-game)
Stage 5 - 1 vs 1 regular battle
Boss 1 - you choose your Nintendo boss (Petey Piranha, Porky, Rayquaza, Metal Face, etc.)
Stage 6 - 3 vs 3 team battle
Bonus 3 - Board the Platforms (you choose your platform course)
Stage 7 - 1 vs 1 metal battle
Stage 8 - 4 vs 4 team battle
Bonus 4 - Race to the Finish or Climb to the Finish (you choose your obstacle course)
Stage 9 - 2 vs 2 metal team battle
Stage 10 - 1 vs 10 multi-character battle
Boss 2 - you choose your Smash boss (Master Hand, Galleom, Tabuu, Master Core, etc.)
Other than BRILLIANT! I like this idea a lot!