Not too fussed about it being year 2 as such.
I do think that it needs to be balance tuned independently of normal fusion rifles. Applying fusion rifle "balancing" to the Vex shows a gross misunderstanding of what this weapon is.
I like how if you say thorn everyone cries yet if you mention any other y1 weapon it's like you're the only person who ever suggested it honestly idc if they get y2 versions but if they do it's only right thorn and ghally get y2 versions as well I mean c'mon anyone from year 1 remembers how amazing all 3 of those weapons are