I feel with you rooby. Moreover you're not the only one suffering that problem. Go checkout " Is there a way to get edit feedback? ", in which I at first added a (frustrated) reply, a bit later responded to by "Free Radical", who seemed to have suffered the exact same problem like you described here. The (right away accepted) 'mea culpa' there came in right on time, because I (as a new-bee around here), was about to give up (which I NEVER do however).
In the meantime I've kept improving (I think), with quite some suggested edits the last week or so, and I can't remember anymore when was my last rejected edit. And about an hour ago I received an unexpected "reputation" surprise (at first I thought the SE-system was suffering some kind of bug/error, until I realised that "somebody" seemed to have noticed (understood) my recent contributions, including some (constructive) critique. Right now I'm still waiting the verdict about my json tag edit suggestion, for over 2 days (!!) now.
I learned from mistakes, even though there is hardly any real feedback from anyone (when 1 out of 3 reviewers marks a suggested as rejected). So maybe your suggestion should be enhanced with some type of person-to-person discussion (chat?) between the reviewer and the author, to explain the rejection, and give an opportunity to the author to learn from mistakes. Better still: come up with some collaboration technique between the author and rejector to further enhance the suggested edit, a kind of negotiation process between those 2 parties.
Anyway, I'm voting up your suggestion!