Is it what you could call banner abuse?
People flock to fallen and GK banners..
Solution:
Nerf Archery and Cav
OR:
We keep clan and randomer banner groups separate. And perhaps even include this fact in the balancing formula somehow.
1. Include banner packs in the cRPG updates.
2. You select banner on the website
3. There are 2 pools split 50:50 or so.
4. Clanless people can choose from group A: Clan members must choose their clan Banner.
Result:
Clanless people can still play with friends if they choose the same banner from pool A
Clanmembers are stuck to their clan, which prevents banner abuse.
Perhaps a lot of work though.. and perhaps impossible because of hardcoded elements. (perhaps not impossible btw.. M&M mod enforces banners.)