Act 60 makes them pay even more. Fix the obvious skews. But attack these, not with radical changes to the whole system, with large unstudied, sweeping moves which can have unpredicted and unwanted results, but with tactical maneuvering. Fix the schools too, if quality education is your mission. But don't destroy the good schools, who's taxpayers already pay average burdens by expecting their businesses to pay much higher burdens.
Local economies are important in a rural state.
The Equalized Grand List now sits as a major underpinning to the whole of Act 60. Regional comparisons won't fix the problems here. The problems have to be dealt with because it can cause bad data for towns that have low sales. Also, some town's listers were infamous for manipulating Fair Market Value in order to receive State aid in the past, this will be even more unfair in the future when it affects how much a town pays in to the Statewide property tax system. This must be stopped.