Custom Build Templates
The reason why build templates don’t exist has less to do with PvP which is barebones and all to do with its implementation in PvE and WvW. They could do it now but they will kitten off PvE which is significantly more important than PvP.
If that’s the case, they could try to claim they were testing the feature in pvp to later export to pve and wvw. It makes a lot more sense to put this in pvp first, because you only have 60 seconds to change your build before a match starts, but in other game modes, that isn’t a problem. PvP really should be a priority for this feature.
I consider the introduction of custom templates a prerequisite for character locking in ranked PVP! Additionally templates will foster build variety.