I think being able to build altars could probably allow for some very cheesy strategies, even if the requirements were quite high--eg. build an altar in a narrow hallway at the entrance to a greater vault, elemental temple, D50 etc. and sacrifice everything. Huge rock + holy water isn't nearly limited enough, IMHO--you can find plenty of huge rocks by mining, or you can scum them off of some of the larger giant type monsters.
Hoping to win with every class, doomed. Archer, Barbarian, Bard, Beastfighter, Druid, Elementalist, Farmer, Fighter, Monk, and ULE Priest down.