My last trap is currently just finishing off, my lab is maxed out, just walls to upgrade and obstacles to remove. I have avoided using too many books or potions on the builder base as I prefer to leave them to my main.

I'll probably continue to put an attack a day in, once I have the rune of BH elixir from the current event. for the 20 points in the season pass and I am planning on only upgrading wall segments when they are up for points in the season pass and concentrate on my main village which has just moved up to TH12.

I don't regret the time I have spent on the BH as it is actually much more in tune with my play-style than the main village.

It's been a fun ride for me.