...posted on my wifes account because I am currently free-to-play

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The problem with Trick Arrow is that Oil Slick really is that good...On an IOd out Incarnate lvl 50 built for +recharge, you have a spawn killing instrument of death that is up almost all of the time. Yes, on a lower level character you don't have that, but you can build for it. It is better ON A DEFENDER than any of the nukes on a BLASTER. Better than crash-blaster nukes because of its built in crowd control, it does as much damage, and it is up far more often. It is better than the crashless nukes because of its crowd control and that it does much more damage.
When you add to this disruption and acid and (to a lesser extent) glue, you don't really need anything else. You have a solo spawn killer that can do whatever the hell it feels like. So to some extent I am with plainguy who said "I think a part of the over all issues with this game is if you build for concept your punished. I build for min and maxing and create the story after I see the build is good." If you take TA as is, it is perfectly fine and actually somewhat overpowered.
I guess I would not want buffs to the set to cause a nerf to the awesomeness that is oil slick. And again, the res debuffs in disruption and acid aren't bad paired with that. TA is a damaging set with some control. If you approach it from that perspective, you will find that it is fine.
So I think we should be cautious in buffing it. It could very easily be FoTM if people were aware of how good it currently is. I think that it suffers from blaster-syndrome (b/c that is what it is closest to) levelling up, but blooms fine end game.
My only buffs (if I needed to make some) would be to increase the radius of acid arrow and to increase the max number of targets for disruption. If you did that, you would be preserving its BLASTroller character and would be buffing it in ways that are good.
I am with Jibakao and plainguy on this as far as buffing it in strange other directions to be some well rounded set. WTF? Why would we want that? It is good at what it does now.