Yes & yes. The upgrade version that Welder Guy is prototyping now does exactly that. It will also replace the little tube bumper thinggy behind the cladding.
There's a pic in my gallery of 3 guys standing on my SuperBumper ... no sagging detectable.
Yer right on all points. I actually deformed that crossmember when I installed my hitch (just tightening the bolts). It's really not the ideal mounting point. If we weren't upgrading the design, I'd probably pound out the depression in my crossmember and sleeve the holes.
I have no response to that.