I am very pumped to get the Wii U version, the GC adapter and the controller, and my own Yoshi Amiibo tomorrow.
...However, I am disappointed in the Wii U versions's single-player offerings.
And it is because of the 3DS version. The Wii U version's single-player offerings are basically the same as the 3DS versions. Except it lacks Smash Run, and it lacks any type of equally big mode to make up for it (Smash Tour is for multiplayer and I don't think it took nearly as much effort to make as Smash Run did).
Brawl had the Subspace Emissary to hype me up as it's big new single-player thing (and a big new thing in general). And I am kind of disappointed in the Wii U version that it doesn't have anything as extravagantly big as SSE and Smash Run. With the exception of Events, Master Fortress, and Special Orders, the Wii U game's single-player content is no different to the 3DS version's. It's just more playing all of these different modes with every character, getting every custom move, getting every trophy, etc. And that is going to feel way more tedious than it ever has in the Wii U version, because I just got off doing that on 3DS.
So I guess my answer is "yes and no". I am not looking forward to the single-player experience in this game, at all, while I did on 3DS. I am not looking forward to unlocking a bunch of stuff that I only unlocked on 3DS within the last two months, all over again. However, I'm still looking forward to everything outside of the main single-player experience, from better controls, to Amiibo, to 8-Player Smash, to the online features, to the Stage Builder, to taking HD photos of the characters (specifically Rosalina, heheh), and the stages.
I'll probably enjoy this more than the 3DS version overall, but it's just that it could have been a bit better.