I see a lot of negativity here. Of course, when there's ambiguity with this sort of stuff, people tend to look at it in a darker or sketchier way when, in reality, it's probably not even finished or final yet.
We don't know for sure what "For Glory" could offer. We've only seen the first menu option of each, which then probably splits into more. If those are all the options, I'd say that's pretty uninspired, but let's continue for a second. What Sakurai did mention is that the prevalence of 1v1s is possible. So, perhaps there's a menu option for that. Or, you could become host for a game and set your own rules - namely, stock matches. Then you go into the training room and wait (hopefully not for long) and boom, someone joins and you get on with your match. We're really discrediting the team for information WE don't even know yet.
As for the platform dilemma, it's not as if this mode will be all competitive all the time. Remember, everyone thinks they're the best at smash bros because they don't face too many others. I'm certain that many up and comers will be drawn to the mode to prove their skill, and when we face them (not to sound cocky, but we're kind of on Smashboards and kind of predisposed to be more knowledgeable) they may seem easy. We're not going into this mode for tournament games, merely to go in an brush up or *gasp* play competitively for fun without consequence.
Might I remind you that matchmaking is going to be applied. And again, since it was ambiguous, many assumed it wouldn't be grand.
Further, many seem to forget that the 3DS version is coming before the Wii U. If there are errors or corrections that need to be noticed, they will be before the game launches for Wii U, almost as a test-run before the big guns roll out. Not to mention, they already crashed and burned pretty hard with Brawl's online, so we can already be hopeful for improvement.
My reaction to only Final Destination? It's vanilla as all hell, but I can't blame them for the design decision - it's basic, straight to the point, and assuringly something our crowd likes. Add butterscotch toppings or sprinkles and someones bound to complain. So for the purpose it will serve, it'll do just fine. And who knows - later down the lifecycle maybe more custom playlists can be introduced. I'm just happy I can play actual people without leaving my bedroom! Boot up the game, and bam, a new fight awaits.... or atleast, that's what I'm hopeful for.