Hmmm.. The stage seems a bit too distracting to be sensible. It's a very original and awesome idea, but make the attacks do a bit less damage and knockback, a bit less often too. Along with the solar panels, that makes things more balanced. ..I can imagine those claw slashes being similar to Kraid's slashes back in Melee. Good memories..
I'm not really sure for a layout.. How about... (ignore the : text)
Those top two platforms are relatively big drop through platforms, just to add a bit of strategy. They're about as close to the ground as Halberd's second, higher platform compared to the indentation on the bottom platform. They help reach the solar panels, indicated by the lower case S's. The area at the bottom which is innacesible due to the stage being grounded is an acid pool. Occasionally, the acid pool begins to rise up, surfacing where the lines indicate. However, the entire stage's bottom floor gets overflowed with acid eventually, which functions very much like Melee's Brinstar's acid. Players obviously take shelter on the platforms, as the acid doesn't rise too high. Is my idea combinable with your idea, Nick?
The bottom -'s indicate the acid pool's location at the start of the match btw, it'l slowy or quickly rise up depending on the situation, i.e. it should rise slowly if the solar panels are on Flaahgra, and fast once they're off it.