Well one good thing that has come out of this Hong Kong meeting is that the line between Core and Blockstream has become even finer: Blockstream's CEO appears to be the official spokesperson for Core.
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On another note, we need to stop worrying about what the miners are doing, and focus again on getting the nodes to increase their acceptance limits. The miners can coordinate amongst themselves to raise the block size limit (or not)--like they always could.
The node operators need to increase their node's acceptance limits TODAY, by running a client like Bitcoin Unlimited. As more and more nodes do this, the miners will see that increasing the block size limit is just something they need to sort out between themselves. I know this GIF came across as political, but I think it is very much the truth:
I'm a bit frustrated because I believe we had the right idea (as well as good momentum) with Unlimited in December prior to the launch of Classic. When Olivier and Marshall reached out to me, and explained how miners were confused by BU and needed help coordinating this first block size limit increase, I agreed and said that I fully supported the project (and I still do). Gavin and I then discussed that the ideal situation would be for Classic to become a tool for the miners, while Unlimited became the client for non-mining node operators that weren't concerned about "big blocks." Instead, for some reason, node operators mostly migrated to Classic too!
The problem now is that there are over 1000 Classic nodes that will REJECT blocks > 1MB unless a certain activation sequence occurs. If for some reason, miners coordinate to increase their block size limits some other way (e.g., perhaps Core will try to do it differently), then those nodes will have to upgrade (possibly to Core) or risk forking themselves off the network. However, if they had run Unlimited instead, then it wouldn't matter!
TL/DR: the "coordination problem" only affects miners. Nodes can increase their acceptance limits TODAY.