I can see at least 3 areas with that system that could cause major headaches:
1) a 3 piece piston with a dogleg in the middle creates stress in the middle of the piston
2) offset pressure on the bolt lugs will stress the upper lugs disproportionately to the lower lugs.
3) offset pressure to BCG will drive the botton of the stock buffer into the receiver extension
Oh yeah, and:
4) It ain't broke so......