The biggest controversy seems to be whether DX worked via a remote should count the same as DX worked from one's home station. Many think that DX worked via a remote should still be countable for your DXCC credits but should be in a separate class or have a separate endorsement indicating such ... others see no separation is needed.
I guess a lot depends on how one views the DXCC program overall. Some see it as a competition against other stations while others view it is a personal challenge for one's own satisfaction and the only competition is with one's self.
For example, if a New England 160m amateur spends many years perfecting his system and struggles for those hard-fought Asian or South Pacific contacts, should these contacts be held in the same regard as the New Englander's 160m neighbour who works all of the Asian-Pacific with ease via a remote station on the west coast? Should both DXCC certificates be the same? There is also the question of remote stations "for rent" and the overall ethics or "legality" of such within the amateur radio service.
The only direct exposure I have had to remote station operation is hearing what was clearly an east-coast remote being operated by an amateur on the west coast, while working Europeans. No problem with that, however, the operator was giving his location as CN87, Washington state ... clearly deceptive, as many Europeans were delighted to think that they had just worked a new state in "7-land"!
I suppose that no matter how strict the "rules" for remote operations eventually become, there will always be those willing to play by their own rules, as is human nature.
The genie is out of the bottle and there is no going back. I think the ARRL has some tough decisions to make ... hopefully they will be well-thought out and not based solely on financial interests.