Yeah, that’s one that nobody’s reported yet – and I really do think that would be a good thing to make normal. I’ll add it to the buglist later, probably.
Reasons I can come up with to make it happen:
It would make Turrets more mobile – by making it easier to put them down more often, it makes it easier for a Turret Engineer to run at just the same pace as others.
It encourages leaving Turrets out – by making the cooldown start when the Turret is placed, the drop-and-pop playstyle loses part of its appeal: Starting the cooldown on the Turret ASAP.
It also, interestingly enough, makes Turrets able to be detonated more freely, opening up further strategic opportunities; with the cooldown issues reduced, Turrets would become an even better source of blast finishers and, when traited with Accelerant-Packed, be excellent tools for interruption/crowd-control.
It makes a Turret Engineer something to be concerned about – with cooldowns starting when Turrets are placed, Turret Engineers could become a snowballing problem in combat: Destroy the Turrets, or force Detonation, too slowly…and they’ll just have another one ready.
This also creates options of counterplay: whether to go for the Engineer themselves to stop Turret placement, or clear out their Turrets as quickly as possible.
Reasons I’ve got to not make it happen: Honestly, I can’t think of nearly as many reasons to not do it, though I may be biased.
Turrets aren’t especially damaging (to the tune of ‘our intentionally gimpy main-hand weapon autoattacks do far more damage than they do’), and have well-known issues with survivability.
