How would it perform against even lighter vehicles with ATGM and RWS? As this is the issue I see, it's a very expensive asset which is going to get fucked way too often by low level threats.

The crew being stuck in it isn't always an advantage, sure they're protected but they also can't flank with RPG, or exit if it catches fire or is imobalized/stuck.

With a humvee you can just use it as a technical, accept you'll be imobslized, but still shoot out the primary armaments and rocket a light tank. You're way faster on the road and while you risk getting stuck off road, you can self- recover.

I don't think the ewoks could get a 12 ton tank around, they'd sink it, get it stuck on a beach, jackknife it, then be unable to recover it. It would exchange fire with far smaller vehicles, and be disabled, because it's not a light tank it's only pretending. And we have a shit load of these lighter vehicles, and Indonesia has very few if any of these hybrid ultralight tanks