“Bitcoin Unlimited” miners are signalling, right now, to keep blocks small, and keep fees high so they can make money.

Why would they back a proposal that removes 15% of their profits! I would be happy with a “max block = 105% of median” approach. 2x median is ridiculous, since this eliminates the fee market… every simulation shows this. No miner would support such a system.

But 1.05% allows the network to run, on balance 95% full, which has been shown encourage a strong fee market. Plus, it allows block sizes to shrink, so Layer 2 solutions don’t eat a miner’s lunch. This seems to be the correct balance. Indeed, getting that number right is the most important thing to gain consensus on.

This allows for gradual, conservative, scaling — and makes it nearly impossible for miners to game the system.