Its amazing and my goto weapon when if feel to ape and im not sniping BUT
few things to consider , chappie take skill to use no doubt about that but within that skill its very easy to use compared to other precision weapons like using sniper 80% of the match like you would use chappie not going to happen for 90% of the playerbase.
So being an exotic easy to use and very effective (Bungie current exotic philosopy ) and not quite the "meta" its not a problem now but if you add icarus on that one you could see more of it and having more shotties is not what we want right now im sure we can agree on that one also that gun would be OP in higher player tier where snipers users do not miss a shoot and you get 3tap 99% of the time.
Its amazing and my goto weapon when if feel to ape and im not sniping and i have clip where ive got half of my super in under 1 min after going on spree with that bad boy and that was after few matches with it after i got it!
I feel like something more creative could be done. Granted, I don't really have any ideas but I feel like that's just a little too light to really deserve it's place as a catalyst. Being able to do headshots through shields on PVE ENEMIES would be cool. Would make it more practical(imo) and allow the gun to have some better relevancy in a side of the game where it's pretty much always been ignored. Granted I am an ultra heavy PVE only sort of guy so I don't think much about what it could have in PVP but it's always felt great to me in there so I can't think of any reason to make it way better in PVP.