How does it keep you from hitting end game? You don't need treasure keys to hit level 34. You can easily hit level 33 just by completing level 32 PoE. Once you hit level 33, do level 34 PoE and then you are guaranteed an Etheric drop. That will get you 33.5 until next week when the reset happens. If you don't want to grind the keys, then don't.