I have recently observed edits being made in a puzzle, which make no contribution to the puzzle as a whole but are made only to style it. I mentioned a recent example in The Sphinx Lair, The official Chatroom of PSE.
Low rep users can make earn +2 rep for each edit that they suggest and which is accepted. As a bonus to this, the edited question is bumped to the top making it more likely to be seen by people and hence upvoted/downvoted.
Now, Anyone can easily rollback the edits if it doesn't help much but that is not a great idea since that too bumps it to the top.