There is truth in what you say, but IMO you are doing melee characters down a bit. My quickest run-through was with a tanky fighter (AC 18-19 by level 3) who specialised in two-handed weapons and got by far the biggest proportion of kills (although I was cheesing by having them revert to single-wield + shield after every attack). I think I used one revivify scroll and three potions in that game. (But yeah, all right, we ate a lot of meat.) Lae'zel, if you build her appropriately and kit her out with the right stuff, is also a proper house, regularly doing 20+ damage per turn, and twice that with Action Surge/potion of speed/haste spores.
