It's a question that nobody has really pondered; but as The Pixel Kingdom demonstrate here, the resulting combination of 2D fighter and portal creation device is downright awesome.

Using Dhalism's extendable arms against himself in a situation of punching onesself followed closely by severed limbs, an infinite loop of Blanka's rolling attack, being able to dodge the relentless stream of 'Hadouken' fireballs that most players use as a go-to tactic for a cheap win (not bitter at all...), it's all here.  And the concept makes for a pretty hilarious game, which is guttering because it only exists in video form.

But, as has happened with Mari0, we eagerly await someone to make this a reality.