I like completion points. They are the only thing newbies can have fun with since they suck at running. They were pretty addictive for me starting out.
Idk if amount of completions is a good metric for competitiveness of a map, maybe how close all the times are to each other? Also I think difficulty should play a role at least a little, since generally the better you are the more harder maps you can speedrun meaning you deserve more points probably. But also that might not matter for wr and the top few times since they'll all be top players probably, so maybe approaching the top few, difficulty should matter less and less.