As old school R6 player, I prefer lean, it’s makes things more tactical and tense. At the same time it creates slower gameplay and steep learning curve, which most players won’t find applying. I think they’ll be more acceptable to in SP/Coop cause it adds to the experience. But it’s not easy to implement on controllers, that’s where I think the auto lean works best. FarCry3 had nice auto lean, similar to BF but it had cover leaning when crouched and blind fire without exposing yourself, though it was disabled in MP.