Try improving your group skills; I'm between levels 5 and 13 (average is 7).

Stars: a bunch of level 50'ers have 4 stars on my server, mostly Kakashi, etc.

Our one level 67'er (it's a fairly new server) has 17264 right now.

Maybe get your group leader to upgrade the group's level? I hope this helps~

Bummer. My leader (shoutout to boss) kicks inactive players out, but most of our members are already active.

Other groups recruit via the world chat; stuff like "(bleh group) is recruiting, active ninjas welcome, any level". Although this gets annoying when it's every five minutes, maybe have people in charge of putting something like that out every... hour?