What are you so afraid of, Eric? If Mike's fork is successful, consensus is reached around larger blocks. If it is rejected, the status quo will remain for now. Network consensus, NOT CORE DEVELOPER CONSENSUS, is the only thing that matters, and those that go against network consensus will be severely punished with complete loss of income.
I'm not sure who appointed the core devs some sort of Bitcoin Gods that can hold up any change that they happen to disagree with. It seems like the core devs are scared to death that the bitcoin network may change without their blessing, so they go on and on about how terrible hard forks are. Hard forks are the only way to keep core devs in check.
Despite significant past technical bitcoin achievements, two of the most vocal opponents to a reasonable blocksize increase work for a company (Blockstream) that stands to profit directly from artificially limiting the blocksize. The whole situation reeks. Because of such a blatant conflict of interest, the ethical thing to do would be for them to either resign from Blockstream or immediately withdraw themselves from the blocksize debate. This is the type of stuff that I hoped would end with Bitcoin, but alas, I guess human nature never changes.
Personally, I think miners should give Bitcoin XT a serious look. Miners need to realize that they are in direct competition with the lightning network and sidechains for fees. Miners, ask yourselves if you think you'll earn more fees with 1 MB blocks and more off-chain transactions or with 8 MB blocks and more on-chain transactions...
The longer this debate drags on, the more I agree with BIP 100 and Jeff Garzik because the core devs are already being influenced by outside forces and should not have complete control of the blocksize. It's also interesting to note that most of the mining hashpower is already voting for 8MB blocks BIP100 style.