I'd say it like this."Okay, you can play Meta-Altair, as long as you roll(not slide) the whole thing joined together from two cards away in ball form and get it to open on a card." In the standard Spinmaster configuration, this is impossible. You'd have to use a card that allows you to place a bakugan instead of rolling it and I think that would be an adequate limitation, as they'd have to waste space that would otherwise be used for Akimaro's Surprise or Attractor.
Wrong, Kohdok. You must roll Bakugan CLOSED.
Yeah, I know. That's the idea, like with the "Minumus Helios" and "Drago Tank-Mode" threads where they're all closed yet still completely assembled. Even in all closed form, they'd be impossible to roll and get to stand on a card. The notion that they are impossible to play the normal way gives them a handicap and requires an entire strategy just to play them at all; one which Rikimaro's Surprise, Scorpion Sting, and Stand-off can quickly shut down or simply be directly countered with Duck and Win, Haos 2, and a host of other cards. If they can't play it and it's the only bakugan in their unused piles, they lose a turn as the only thing they can do is place it into their used pile!This would be a house-rule, of course. I'm coming from the same direction as the massively powerful tripod mechs from Mechwarrior, the Galactus figure from Heroclix, and of course Exodia the Forbidden One. While extremely powerful, you have to completely design your strategy around them or else they're pretty much worthless.See? Closed. You'd 'roll' Meta-altair in this form, but because the magnets face each other they can't touch the card so it wouldn't open.