so i've played it now
the SMG arms are really cool but what really gets me is that that's the only real deviation from the smash bros formula
the arms are all stand-ins for things like fox's blaster and samus's missile (read: the boring things) most of the other parts are just commonly used other attacks (fox's up B, side B, marth's smash up) and still the most powerful attack is the meteor smash you've had from the beginning of the game
the sounds are weird and out of place and non-existent where they probably should exist (WHENEVER YOU ATTACK, for instance) and the characters are too small and cute to look like they're actually trying to do damage to one another and that's not made up for by overblown, exaggerated animations (like kirby's or ness's attacks from smash bros)
but the concept is there. it's a good one, too.