I miss the piledriver, but I understand them not allowing most wrestlers to do it. As a worked move, it's unnecessarily dangerous. However, rather than an outright ban on using it, I wish they would go with a "case by case" basis (they somewhat already do as both Undertaker and Kane can continue to do the move, but I think it should be widened: if a wrestler can execute a piledriver-like move safely and consistently, then let them; if not, then don't). I also, however, realize that even the safest, most consistent wrestlers can botch a move like the piledriver easily (Owen Hart).
As for the moves that look devastating, but don't require the physical power or expertise to execute safely, I'm with those that bring up the Curb Stomp. I don't care what you call it, but it's a very cool-looking impact move.
wk