I see your point but why must a guild always grow? its simple to delete inactive members but why always be focused on growing? If all you do is focus on growing and sorts it becomes less fun.... Delete the inactive members and just let people join of any size or shape thats how my guild does and we do fine
and if some of your active members leave then ask to come back but your full then apartantly they aren't that loyal to ya cause the decided to join a different guild that appealed more....
(Just my say..... I was kicked outta a guild cause i was basic when i was a young pirate this matter does not float with me from my past experiances)