Add couple building pieces, one piece that is placed that when offline all damage is reduced by 99%. Now size of your clan limit how many u can have full clan up to 3.
Now new piece for declaring war it creates small radius that paying resources makes it grow or time it expands.
This changes that in radius allows things to be destroyed even if it’s not raid times but doesn’t counter off line protection. Allso it prevents the defender to build new or replace pieces. The only thing is allowed is to repair pieces.
I think this reduced the headache that this game have.