Zealot was only good for people that don't remember Midship. Map was ass and incredibly overrated. It was a horrible FFA map comparatively to some H2 and H3 FFA maps and played extremely boring, especially with radar.
I wouldn't mind seeing Countdown, but most of the other maps were pretty bad. Maps like Pinnacle, Asylum, Reflection, Battle Canyon, Forge World Blood Gulch, etc. aren't Reach maps. Although I wouldn't mind seeing them return with proper remakes, I would much rather like to see Lockout, Midship, Wizard, Turf, Boarding Action, The Pit, Guardian, Onslaught, etc.