what exactly would you consider a fair tier? that includes both tethering and data in one? this should be good.
And my perspective is I don't need tether, rarely do it, and don't want to pay for it either directly via higher rates or indirectly via lower data caps.
Until they literally give away the farm, people will complain it's unfair. Heck, even then they'd probably complain about the speeds on a bogged down network.