So here's how it is, whether you like the add-on or not, GearScore is helpful in the creation of pugs, however I agree that the main cause of of all the controversy about it, lies in the lack of information it provides. Therefore I propose to all you add-on creators out there, the creation of an add-on that provides not only the information that GS provides but also tells you what raid content the player has completed similar to what you get at wow-heroes.com.
I'm sure that if an add-on like this was made it most definitely would replace GS and end the conflict between those who are for or against its use.
Thank You