I've always thought that it was a good idea to keep the same zine title to establish familiarity. Zine people are usually less known for their names than their zine titles. Even when some of the big guns, like Al Burian when he put out stuff under a title other than his regular one, Burn Collector (was it Fabulous Disasters or something like that?) it seemed to get a lot less attention.
I always try to talk my friends into keeping a regular zine title for that reason. I'm sure there's some zines by people that I like to read that have went under the radar because I didn't know it was their writing. Hell, I've probably read plenty of reviews of these zines and not even known.
I must note, though, that right now, my zine is getting kind of awkward, though. Because I've started a sub-series, and I've started tagging it with my old title like this: "Eaves of Ass Presents: Promise & Theft" (Eaves is my old title). But I still think it's a good idea to associate it with my old zine. There's also a comforting personal familiarity there.