And a -SPD Nino is still 100000x better than a Boey. If you aren't a whale you take what you get and use your best units, even if they have bad IVs because they are still better than everything else you have. And if you aren't a whale, you aren't in a place in the arena where IVs matter.
I don't get all this -ATK reinhardt is useless talk either. His prototypical build of Deathblow and Lancebreaker (not to mention Moonbow with Quickened Pulse now) and used with the correct allies is still a unit you can form a team around.
Quick numbers, a -ATK Reinhardt with DB3, LB3, Goad, and a Attack Seal goes 87-13-39. Add quickened pulse and moonbow, 104-9-26. Add a +2 hone attack, 114-7-18. Add a +4 Goad Attack instead of Hone, 121-4-14. Losses against Hector, Nino, Sorren and Merric. Run him in my horse emblem team with Goad and Hone Calvary, he's 131-0-8.
Far from "useless."
Edit: wasn't intended to be directed at you Drax, I just started with agreeing with you on Nino then went into a rant haha