If they want to make more plays reviewable to get more things correct, and it doesn't slow the game down much more, I'm OK with that. I'm skeptical it wouldn't slow the game down though.
However, I think it would end up causing more controversy, not less controversy. People will still argue about calls. Most RTP fouls are in a grey area and aren't that cut-and-dry.
They should make it clear that play stoppage and further review will only be for plays considered reasonable doubt.
A crew in the league office seeing the immediate replays should be able to determine pretty quickly whether something should remain the judgment call that was made, or warrants further review.
We see it every Sunday when former refs say on the broadcast whether a call will likely stand or not on replay. Some calls would still be questionable but they'd get a lot more right.