)
In conclusions reviews must not become a chore otherwise you will see them dwindle down even more than they already have. Honestly i started reviewing on TER only because i wanted to see some reviews (get the VIP) because otherwise man its not fun to be a first time review. So many questions, take forever to answer them all and most of my replies end up being "no idea"
I agree about not making it a chore, but most of the subjective ones above seem fine to me. Personality, value for money, etc. They are subjective but a quick note on them gives you a sense of the reviewer's opinion.
I would find value for money more interesting than repeat. Some people hate repeating because they crave variety. Others love repeating because they think they build a better rapport.
I do agree that service level is a can of worms if people don't agree on acronyms. I'd probably drop that one because I'm not sure people will ever agree and also because there is so much YMMV anyway.