Request for new feature

Hello,

Is it possible to to make wall upgrade without the need of builders ?

Why?

Because, When all my builders are working on upgrading my village and my resources are full i can't use my resources on anything and i need to wait for long time until one of my builders finish upgrading which i have nothing to do in-game but wait the builders in order to use my resources.

but if it was possible to upgrade the wall without the need of builders, i will keep playing in order to collect more resources for upgrading wall and stay in-game while waiting for my builders to finish upgrading.