I honestly don't understand - people don't want to hold their guilds back because they're missing tier bonuses right? So remove an additional source of said tier bonuses? As it stands now, you can run LFR to potentially get a tier bonus, up your DPS/HPS/Mitigation to help your guild. What you want is for that option to be removed? Therefore holding your build back when you get an unlucky Tier token streak?
Makes no sense to me.