I just downloaded the game and tested some of the characters I was familiar with (namely, Link, Mewtwo, Kirby) and played one or two games with the rest, while letting the computer play the new characters (Toad, Megaman etc.).
Apart from the controls being slightly unsynced (for some reasons my D-airs turned into N-airs most of the time), the game was really great. I had much fun playing and will recommend it to my friends.
However, when I played Link vs. Ryu on Battlefield, the game froze for a minute, until the stage was loaded. The next fifteen seconds were playing on a very low FPS. It was the first time Ryu was played, if that helps. Same thing happened when I played Samus and used her Final Smash on...can't remember the name of the stage, but it's custom, with four platforms and grass on the floor.
Finally, I'd love to see Break The Targets for 1p-mode, Melee style (a different map for each character). I understand if that's too time consuming, but I'd really want it.
Some kind of original mode, not snatched from the SSB series, would be kinda cool though. I'm thinking of some variation of ten man melee, where you first face one faceless enemy, and when that one is beaten, two new appear. When those two are killed, three spawn, and so on, until a good preset limit (five? ten?).
Anyway, looking forward to future updates. Keep up the good work!