I regularly review suggested edits on the review page. One common situation is that a user will propose a tiny edit, like capitalising a single letter, or removing only the salutation from a post. In many cases there are still multiple further improvements that could be made, but that editor hasn't seen them - or can't be bothered.
I feel uneasy accepting such edits. On the one hand, it reminds me of the army of 'twiddlers' on Wikipedia, who spend their time making tiny inconsequential edits when they could be doing something much more useful. It also feels lame to award someone any points at all for capitalising a single letter in a title. I sometimes feel that this may be a kind of gaming of the system on the part of some users - suggesting multiple small edits for point gain rather than just fixing the whole post. I also see this with tag wiki editing.
On the other hand, it is a valid edit, and it does objectively improve the post.
There has been a prior ruling on part of this. There was some substantial discussion about the aggressive removal of salutations during the Rich B era (remember that wonderful chap?). I seem to remember that the conclusion was that removal of "hi! / thanks!" on their own was not sufficient grounds for a post edit, although I can't find that now (this post is relevant, but inconclusive).
I have been erring on the side of 'this edit is pointless' and voting to reject, but I notice I am often overruled by other reviewers.
Perhaps one answer would be to provide a third option, after accept/reject:insufficient
?
What behaviour are we intending to reward here?