Allow Main Base Heroes on Builder Base
So the main base gets tied into the builder base with the gear up cannon right now but the builder base has no tie-in to the main...
Lets give all of us who have grinded out our heroes the ability to use them in the builder base (to a lesser extent).
For every 5 levels you upgrade your heroes in your main you should get 1 level on your builder base:
Home village level 1 AQ --> builder base level 1 AQ
Home village level 5 AQ --> builder base level 2 AQ
Home village level 10 AQ --> builder base level 3 AQ
Home village level 15 AQ --> builder base level 4 AQ
Home village level 20 AQ --> builder base level 5 AQ
Etc, Etc.
Max would bring you to lvl 10 on Builder base.
You could make it her long lost sister or something to tie into the story.