Just completed a walkthrough of Co-op All quests with my brother on current patch and planned to use the Morningstar glitch to finish Terra, but, after a half hour of stacking, it still wasn't feasible. We were both level 32 at the end playing Gaige and Axton. Is there a method to kill him without grinding? It kind of ruins the run if we are forced to grind levels or do an hour+ fight against Terra at the end. We're trying to avoid downpatching if we can, mostly because we don't want to.

you're facing something like a 99% damage reduction from being 18 levels under him, so without the massive glitches possible from evil smasher i don't really think you're going to be able to do it

If we run All Quests, Current Patch, Co-op with the caveat that "You Will Die, Seriously" is not required, can a new category be made for that?

If you want to avoid downpatching and are struggling with Terra, there are a few strategies you could try. Look for other glitches or combine Gaige and Axton’s skills and gear to maximize damage. As for creating a new category for All Quests and block blast without the "You Will Die, Seriously" requirement, that sounds like a great idea! It might be worth discussing with the community to see if it could be accepted. Good luck!