It's nice we're getting new stages too. Frankly the stage selection SSB4 came out with was a little disappointing even from a casual perspective
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Expected but cool
FD, BF
New and hype
Mushroom Kingdom U, Mario Circuit, Jungle Hijinxs, Skyloft, Pryosphere, Orbital Gate Assault, Gamer, Garden of Hope, Boxing Ring, Gaur Plain, Windy Hill Zone, Pilot Wings, Wuhu island
Meh
Big BF, Wooly World, Kalos Pokemon League, PS2 Brawl, Bridge of Eldin, Temple Melee, Coliseum, Skyworld, Wii Fit Studio, Wrecking Crew
Happily Returning
Delfino, Norfair, Lylat, Castle Siege Brawl, Port Town brawl, Halberd, SV
New and lame
Mario Galaxy (out of all the awesome Galaxy stage choices the gate was picked?!), Palutena's Temple, The Great Cave Offensive (too big and confusing even for 8 players), Town and City (basically a SV clone), Flat Zone X (a previous Flat Zone clone), Wily Castle (lame layout for this theme), Pac Land (MS Paint auto-scroller)
Why'd these have to return?
Brawl Mario Circuit, Luigi's Mansion, Congo Jungle N64, 75M, Onett, Yoshi's Island Melee
DLC
Miiverse, Ryu's Stage from SF2 (I think), Dreamland 64
That's a lot of recycled stages.