I think it’s a good way to assess who does a lot of mythic+ and who doesn’t.
Let’s say I’m someone that farms mythic+ keys 15 and above, id obviously want people in my group who do the same shit. The addon would allow me to filter through people who don’t do as much as I do and grab people who do.
That’s not actually me though. I never spammed mythic+ I just did the 10/15s whenever it was needed and sometimes did extra. My score is 1.1k, kinda low, but I’ve never really had problems getting into groups at all, even 15s.
Just today I had someone ask me questions about boss mechanics to make sure I knew what I was doing. I thought that was awesome. He asked because my score is on the lower end but he still allowed me to show I knew what I was doing. So we 2 chested our 14 key and everything was all g. For this week I’ve done 2 14s and one or two 15s. Had no issue finding groups.
Overall though, I don’t use the addon in game but I do sometimes use WP to check my own score when I’m trying to improve it as well as check out my group mates when I’m in a high key group. I think WP/I.O are both fine, they let people filter out those who they don’t want a lot easier.