Honestly, Build Templates is such a freaking mess that it broke half of the game:
And that is only a few of the issues that we found in 2 days.
So I think it's time for Anet to really stop for a moment and think about the current status of a player experience and then re-work Build Templates even if that delays the next episode, because let's face it, we can't play with the current iteration. You know reworking Heart of Thorns, 2 months after its release, saved that expansion; now we need something like that to save the game from the mess build templates created. I want that but I'm not sure about others, so it's poll time!
In that direction, this is in my opinion the best suggestion to fix the system. It's simple, elegant and gets the job done:
Bonus: This is a must-do IMO and Anet feel really disconnected from the playerbase for not doing it: Build Equipment Slots should be accountwise