Interesting but it precludes the use of any form of races on the crank, unless you really want an engineering nightmare to content with and any form of front induction.

And how does varying the centres interact with liners port timings and that litte carbon ridge that usually forms at TDC?

Does the comp setting drift at all due to the shaft wanting to turn the bushing in the same direction as its rotating plus the hammering it gets along the way?
Cause thats exactly how an impact driver works when freeing up frozen bolts and screws.

Ah so many questions!