Pushing down on the wakeplate would help any bow-rise or planing problems. It won't help your wake any, though it might let you get out of the hole with more weight on board.
The wedge would be interesting, but protect yourself from structural and gelcoat damage resulting from the added stresses. The mfr should be able to sign on for that (don't know if they would, but they should.)
Would be great to get the mfr to hook you up with a local owner for a demo run. If it's only as good as the Malibu wedge, it wouldn't be enough downforce in itself, and you'd still need weight in the boat. If it's got more bite, then it could be a cool thing.
Also, make sure the design has a breakaway feature so that running aground won't rip your transom off.