The rio keyword is really useful for filtering mythic+ groups.

I would like to see something similar to filter out raid group listings with leaders that don't meet certain progression thresholds to avoid 6/8N group leaders that advertise hc zerg groups.

Next version supports rionormalprogress, rioheroicprogress, riomythicprogress, riomainprogress, rionormalkills, rioheroickills, riomythickills and rioraidbosscount. Have a look at the list of keywords!