This isn't to change to the current rejection process or review queue in any way.
There was recently a rejected edit on one of my answers.
It was correct to reject from the reviewer's point of view, because variable names in code were changed, however, the edit would have been beneficial to the post in this case, and I would have liked the suggested edit to have been accepted.
I edited my answer and manually added the rejected suggested changes myself. On this occasion it was a small edit, but this would be quite time consuming if it was a more substantial edit.
It would be useful if we had a feature where a user can approve/improve an edit on their own question or answer which was previously rejected by community review.
Ideally, there would also be the option to Edit & Approve so we can change any bits if necessary.
Perhaps (for example) an option in the Suggested Edits history where only the OP, and maybe moderators, can select to approve or improve a rejected edit.
OPs can currently approve suggested edits, overruling the review queue, so this would just be an extension of that - being able to approve after 3 users have rejected.