As said, he's good to bring for synergies. However i think my rank 3 Nick is decent, you can still get a lot of bleeds (great counter for thing) and getting his technical charges up using sp1 will still give him the Furious buff and go unblockable.
Nick Fury is best when duped but if you have Heimdall and Angela/Hela synergy it can make him much more useful. The problem with him being unduped is he doesn’t gain the fury buff so his tactical charges fall off. But the Heimdall synergy patches that and makes him better.
I have him as a R4 5* unduped, and while his damage potential is lower because of being unduped, I find his light ending bleeds still dealing a fair amount of damage. I had a 3-4 skill gem so that's why I took him up (already had Aegon at R4 and don't have any other skill champs worthy of ranking up), without that gem I would have kept him at R3 until I duped him
Comments
However i think my rank 3 Nick is decent, you can still get a lot of bleeds (great counter for thing) and getting his technical charges up using sp1 will still give him the Furious buff and go unblockable.