Well, I personally hated the stuff that was popular with fans and loved the stuff that JMS was gonna do away with.
I didn't like Galen, I didn't like the over-used plot of stolen shadow tech, conspiracies, breaking away from Earth etc, and apparently that's what would've taken centre stage in Season Two.
I hated the music, "different" does not always mean "good". The acting was terrible, the dialogue was blah and I tended to enjoy the TNT episodes more than the JMS ones (although Racing the Night and Each Night I Dream of Home were great episodes).
I liked the story of the planetary virus. I wished that was gonna continue on, that the Excalibur would be forced out of the area and couldn't finish what they had started.
Plus, showing Dr Franklin proved the virus was cured, so bad move on that part.
I would be up for a complete reboot. If not in the B5 universe then take the story elsewhere.