The only reason we are "hated" is because we have, over the last two years (and will continue to do next year on occasions), been playing against largely tinpot opposition with deluded, miserable, downtrodden fans used to seeing other tinpot clubs turn up to play dire, uninspiring football in front of dire, meagre and uninspiring away followings for the sole purpose of perpetuating the humdrum and ambitionless existence of their dire, meagre, uninspiring, humdrum, downtrodden tinpot club.
As we climb back up we will move into the "largely indifferent" category and possibly progress into the "well liked club with good fans" category as we move into the Prem. If we start achieving real success in the Prem we will probably move towards being unliked again.
HTH.