Killerwhale, I like your approach, something like the trample-charge-bar or the luci-charge-bar or the pounce-charge-bar, yeah, that could do the trick.
But maybe the mara ain't the problem but the too slow turrets, however, I made the experience, that it takes only one fairly skilled advanced marauder to kill an entire base even if it is built well, and if you happen to have lag, that lag skyrockets in such a situation, and you won't be able to hit the damn thing at all.
Before I opened this thread here, I devmapped around in Karith, trying to find a mara-prove base, and whatever I did, even I, being pretty unskilled with mara, could devastate the whole thing while zapping and moving around, one or two times I even got away without being hit by a turret, no matter were they were.
Maybe we could leave mara+ as it is, but make turrets tougher or something?