So, there's still a ton of existing exotics that lack catalysts Xenophage and winterbite are standouts among them. We need an event that drops a ton of catalysts to fill out the roster. Speaking of xenophage, it highlights huge issue with ammo reserves. Several weapon archetypes got hit extremely hard with the armor mod changes and need a serious buff. And generally rocket pulse rifles need some more ammo, there's no reason you shouldn't have three full mags at minimum for each weapon.