>>36668742I don't grind and I still use 6 Pokemon. Most Pokemon games you can get away with this. Gen 1 and 2 you can be pretty underleveled and still do well thanks to badge boosts and shitty movesets for opponents. Hoenn and Sinnoh seem to be pretty balanced with level gain besides right before the elite four.
HGSS is really the only game that has a big problem with this.