I've not seen Lobdell before his 52 work, so I can't comment on how good or bad it was. But I love Teen Titans. I got into comics through them. Tim, Connor, BB and Bart made me love reading them from Johns' run. Lobdell is just like the rest of the TT writers after Johns' left. Terrible. I even hate his Superboy work. I've stopped reading the Superman stuff. I love Superman so it takes a lot for me to stop reading him. Thankfully I have Pak and Snyder to balance Lobdell's crap.
Not a fan of Mark Miller. Not for his Marvel work. Don't read it anyway. He just goes for the shock value. His characters are copy and paste characters from other people's work.
Unless I see proof for Tim. Not believing it. I don't mind Tony Bedard though. I'd want something different with Tim. That makes him stand out of his Bat-brothers and sisters. I'd like him to delve into the mystics. Mystics, Mystery and Martial Arts.