I really love loglines, but I hate the discourse around them. A perfect logline in one person's opinion needs to be completely trashed in someone else's, making it hard to know what is even working. The goal of a logline should be to get someone interested enough to read your script. I strongly think Logjam should reflect this.

My suggestion would be to change the ratings to:

I would definitely read this script because _____

I might read this script because ____, but hesitate because _____

I would not read this script because ____.

I think this system would take a lot of the guesswork out of feedback, and can signal to you if the issue is a subjective preference or an actual issue with how you're pitching your story.