The fortitude and burn salve become "super" versions of the healing and mana potion, exclusive with their lesser conterpart as preps, only possibly appeat in shops instead of them and remain at 15 gold. I'd monve the Tiki Tooki potions down to lvl 2, again, with no ossibility of them taking the place of stuff with serious conversion points, and I'd do the same for the 2 remaining potions.
I'd also take whoopaz out of the game, as it's a silly prep anyway, and you could just lower the hp on all of the ridiculous bosses by the necessary amount.
No other way I can think of would make me consider unlocking all that stuff.
On an unrelated note, the naga city run that I was sort of bragging about just earlier didn't register. I totaly deserve that for wasting so much of my sick leave on spamming these forums and playing this game. Anyway, here's a more ilustrative example of why the monk is WRONG:

It's not really obvious from the pic, but this was a run smoother than the last. No HALPMEH, no dragonshield, no collar, no desecrations, only two gods, no whoopaz, no soul orb, no poison ward, no trisword, no cydstep, no time investment, no difficulty.
The only differences from the previous run is preparing the burn salve (I've unlocked the witch, but didn't do the quests), and using it to kill a higher lvl goo and a higher lvl serent at one point, gettin the blacksmith subdungeon (which was huge, as converting everything but the badge gave me 15 GG piety and another stack of dmg), and a rather funny sequence when i was trying to get one more hit into Frank before I lvl up off the Goblin boss - and dodged 4 times.
The god sequence was GG, lvl 2 absolution, humitlity, I took a cleansing at some point I think, Enlightment, some more iety farm, swap to TT, XP boost (I think), Poison, Dodge, went below leaving 2 potions and a perservarance badge, sank money into TT, converted to drac, took +1 lvl +20 piety, took Blood Shield, took pactmaker for Consensus, went Mysteria and remained there untill the end taking 3 mana points along the way.
Only potions I drank were if there was no other way to remove poison or mana burn.
I know you can beat this lvl with other classes, just nowhere near this easy.