@dseufert Maybe a little too late, but today I stumbled upon your ‘finding cheaters’ comment.
I have my own checklist, it pretty much looks like yours. A red flag for me is not sharing the strategy or joy when posting a topscore. An exception for me on this rule is when it’s a well known player. I also check to number of postings on their leaderboards and it is easy if someone has only posted that 1 (or perhaps 2) high score.
What I find difficult is when someone has posted not all but let’s say 50% of the scores throughout several leaderboards. What if they just got lucky but stopped playing? Especially in the older games there are unknown names with (questionable?) scores in the top 50. Sometimes I don’t flag scores like these because I’m not sure if I have flagged them before and if they are already checked and I don’t want to notify the admins if not necessary. So what do you do in situations like that?
