Would it be possible to get a "Queue for Upgrade" option? Say I want to upgrade a cannon but all builders are busy I can just check the option to upgrade when a builder frees up as long as I have the resources cause I work so I can't start an upgrade as soon as something finishes most of the time. Thanks for reading and the consideration let me know what you think. (Oh and sorry I sent this in a message to the help center I didn't discover this till after.)