The LQP review queue offers only three possible actions (other than skip): approve (OK as is), edit, or delete. A good percentage of these posts are low quality as-is, but could be improved. I frequently don't have the knowledge to edit it myself (also, if a post is in the LQP queue, it typically requires a level of edit that should only be performed by the OP because of the scope of change required). But I can leave a comment about the nature of the fix needed, and the OP can edit it. Sometimes they do.
To encourage new posters, it would be better to give them feedback and let them improve the post and learn, rather than immediately delete their first posts. The LQP options are geared toward immediate resolution (fix now or delete), rather than a more user-friendly option of feedback now and delete later if it's still necessary (i.e., fourth action option of comment).
If a post is deleted and later improved, the OP needs to jump through hoops to get it undeleted, and that rarely happens.
In these cases now, I comment and then skip. What is the preferred method of handling these?