As mentioned in a comment on an other post
Indeed. There are some either really stubborn or really stupid users who keep suggesting the same edit to the same post over and over again until it gets approved by some unwitting robo-reviewers. – BoltClock's a Unicorn Feb 18 at 17:24
So that why I think it will be great to block users to suggest same edit twice if the first one was already rejected by reviewers...
I know that it would store a lot of datas, but maybe with a lifetime for storing old edits, you will be able to avoid most of bad re-edit!
So thanks to comments, an acceptable solution can be implemented :
flag-bans which have already proved its usefulness.
The idea is to suspend the suggest-edit right after some warnings if the user get too many declined edits in the same question. The right may be suspended generally or only for the targeted post...