Well, the reason warlock exotics are trash is because generally, a warlock has exotic effects baked into their kits most of the time, and usually, at least seemingly, an exotic will only ever enhance what a warlock already has. Titans and hunters are generally more bare-bones, and it is usually an exotic that gives them that extra tool they need. This is why warlock exotics rarely if ever break the game necessarily, but the subclass itself does, and the exotic simply exacerbates a problem that exists with or without the exotic. The only real exception to this rule is the contraverse hold, but they still wound up destroying the class itself rather than the exotic specifically, since the hhsn was an actual menace (I loved using hhsn without the contraverse hold, but it was like having a pocket shotgun, it was just so reliable even without the gloves). I personally believe that the Sanguine Alchemy was reworked with OEM because recon was something they decided to make exclusive to hunters, conceptually, when they made that pass. Identity was likely the reasoning, for better or worse. The rework they chose was okay imo, but it shifted the exotic from exclusively pvp to nearly exclusively PvE... but only good for solo. Near infinite rift when dealing with enemies you can’t effectively hide from helped me through a lot of bad situations in solo play, but it was absolute trash in coop, since unless I got the killing blow, I could not maintain my rift. The new exotic is the opposite, working better for coop but being completely worthless in solo play. TL;DR: Technically, you still have a use for sanguine alchemy... it is the solo version of the new boots. Also, I think the rework to sanguine alchemy was more about class identity than anything. Those are my thoughts anyways. I know that what I said about Titan and hunter being more barebones is debatable with stasis on the scene, but I do think that is the reason, conceptually, that warlock exotics are pretty barebones by comparison to the very practical exotics that hunters and titans get. Warlocks are exotic by nature, Titans and hunters need tools to really shine.