I want to, but some Pokemon already have cool names to begin with.
Like Greninja. I could nickname it a TON of stuff. But I like Greninja as is. Pyroar is a cool name. But I will nickname him. Chespin? Getting a Nickname ASAP. Treevenant? Might nickname it "Spookytree".
So it's a per Pokemon basics. And I always nickname my Raichu "Slychu".
Donnel is my # 1 bro. We fist bump, slay some risen, eat some chicken strips, bomb the Valmese and steal sugar from Gaius on a daily basis. Like a Boss. FE:A