I personally would like to see a feature, lets call it reincarnation, which would allow you to switch clans lets say once every 4 months. Original cost could be 400g or 800 coupons so both vip and non vip could afford it, and every subsequent change would be 2 times more expensive. If you were a leader of the guild then the leadership would go to a person with the highest activity for the last 2 weeks. You would also take your merits with you to the other clan.
The reason for this feature is simple. Sometimes ppl are forced to get the short end of the stick simply because they are part of the dying clan even though they active every day and attend everything. It is basically impossible for them to get first hit on other clans ES, they will be always last in ryoka as a clan and will have trouble in GW unless they are the strongest on server.
nothing would change with that though everyone would just switch to the strongest guild a better option if you really need a clan switch is to hit level 80 and get a one time use item that you could change guilds but never again
Changing guild doesnt solve anything if a clan as a whole have the least amount of active members and are barely strong enough to compete with average members of other clans.. I am in the strongest (basically only somehow active) quincy guild on my server but it doesnt help any if almost noone is active during most events.
Shinigami although not strongest have the numbers and the lowest ES so they can kill it fast easily, arrancars are the strongest but are lacking the numbers compared to shinigami but still has more than quincy and quincy are lacking both numbers and power...
Possibility that ppl would just go from shini to arrancars and vice versa are basically nonexistant.. I know most members of those clans and everyone is content with where they are so it wouldnt destroy balance or anything. It would actually make it more ballanced if quincy would join the slighty weaker shinigami. Of course it is only the case of my server and I cant speak for others but I really doubt that suddently everyone would just switch to single clan and even then it would make it ballanced because GW and protect seireitei are based on guild fights not clan.