I'm not sure I understand rewatching something you obviously hated just to make sure you still hate it. It seems like a colossal waste of time and energy, though I suppose if you're starting to appreciate it more this go 'round, more power to ya..
I didn't like Enterprise when it was new, so I quit watching after the second season. But I've been thinking about giving it another try. Not to make sure I still don't like it, but to see if maybe I judged it too harshly the first time. After all, I wasn't crazy about DS9 when it was new, but I think I was too young to appreciate it at the time. But when I re-watched it, it became my favorite Trek series.