I mean, from the feedback from the players the problem with barrelmancy was about how convenient it is to set it up before patch 5
but if this setup will take hours after patch 5, then I don't see it as a problem or find myself think about it even if it is gonna one shot all the bosses in the game
granted I have not try barrelmancy before or after patch 5 so I don't know exactly how convenient it was
Exploitative mechanics for a minority of players with little care for immersion or roleplaying isn't the problem. The problem is that this REQUIRES a crappy AI that is likely to negatively affect the majority of players. Not cool.
Secondarily I take issue with the consistently lazy implementations. Had this sort of gameplay at least been semi-clever, it would be a good inclusion. Like casting invisibility on the barrels to explain why the AI is completely unreactive. Or take the obvious option to poison the goblin camp, at least require the player to pass a hard stealth/sleight of hand to do it in a sneaky way, alternatively performance or casting minor illusion to create a distraction to bypass the need of checks.
The Larian cheese is dumbfuckery of the highest order...it needn't be.