I think the Legion really lost their way in the post-Crisis/post-Byrne Superman reboot era. They were no longer as relevant to the DC Universe, as suddenly we had to start explaining who that Superboy was and what was he doing in the future (if there never was a Superboy to begin with).
I've picked it up over the years -- the Great Darkness Saga, the baxter reboot, the Legionnaires (because I love Chris Sprouse's art), but it was just so overly convoluted.
The series leading up to the Baxter series was great. The first few issues of that series were fantastic. Karate Kids death, Projecta beating the guy that even Superboy couldn't take one on one, the mystery behind Sensor Girl, and even the Death of Superboy, but then the endless rebooting and destruction of earth(s)
took its toll on me. The Legion of three worlds was good, but the followup wasn't.