Eh, I think the lv 1 Rogue strategy is more of a gimmick thing even in normal circumstances. In a vicious or vicious+vicious dungeon it's incredibly sub-optimal, especially since you could just prep Yendor for instant level 5. Moreover, a lv 10 Goblin Assassin is going to have better stats all around and will also have an entire dungeon's worth of popcorn to get piety from Tikki Tooki, so he can pull off most of the same tricks as the Rogue only with far more resources. (Granted, a Goblin Assassin doesn't do much "normal" leveling either.)
For comparison, the alpha's Boss Hive has level 2 Meat Man with 4 attack and 90 HP. And the alpha had far more broken strategies available than the current game.