Not really opened to more removal. In standard, the only major things Noxious Gearhulk dies to are abrade, unlicensed disintegration, - empowered - harnessed lightning, and vraska's contempt.
Meanwhile, ravenous dies to magma spray, shock, lightning strike, base harnessed lightning, slash of talons, moment of craving, essence extraction, vraska's contempt... Literally any spell, even a revolt triggered fatal push (which, it will be triggered by you killing their creature).
I'm not saying noxious gearhulk is better, or the 2 mana cost increase doesn't matter, but your point that more removal options are available to Noxious is a joke.