I feel the same way. I liked Lorca better than Pike, even though I loved Pike. Lorca had mystery and nuance. Even though I was disappointed in the direction they chose to go with it....I also appreciated the attempt at a big, mind-blowing twist. So, I didn't hate it. I think they underestimated Lorca's likability with the fans, quite honestly.
I agree. I think they probably expected for everyone to loathe him but I honestly ran into so many people who felt the same way I did - that he was unique and a fresh approach, and everyone was actively looking forward to seeing what new sneaky/dark Lorca shenanigans would arise in the next episode. (I think this is also due to Jason Isaac's WONDERFUL performance, of course. He truly made the character his own.)
I wish they had stuck with him being the "real" Lorca who "just" suffers from a severe case of PTSD. This would have been worth exploring further in a second season, IMO. I love anything Mirror usually (and I can't say I didn't approve of how nice Leather Lorca looked, haha) but this time it kinda rubbed me the wrong way. I related to Lorca quite a bit in various ways and it just felt like a slap across the face to be told "someone like you only fits into the Mirror Unverse". I do think that if I hadn't related to him I would have appreciated the twist a lot more.