I actually have more faith in Monkey Luffy to be brutal tbh, look at how he tore Zaza apart.
My best hope is that this Luffy will regain some sentience and we'll get this:
Who will hopefully have the best balance.
As for G5..after EH do you really think he would be a good fight for Akainu? Whoever fights him would get humiliated by annoying gags.