I listened to the conference call a few days ago and would like to provide the input that you solicited during the call as a large Ethereum miner (+500 GPUs). I know you are trying to strike a balance to ensure the miner community accepts the mining reward changes and difficulty bomb. I have a solution that I think would make this a lot easier.
To be quite honest most GPU miners are now barely breaking even after electricity costs due to the current state of the market and increased ASIC mining pushing up difficulty. Any reduction in rewards without a likewise reduction in difficulty would leave only ASICs on your network. I think I can speak for the mining community by saying we would be extremely open to outright reductions in rewards with the difficulty bomb reward removal if you were to include an anti ASIC POW mining algorithm change simultaneously. We know once ASICs are off the network we will again be on equal footing with other fellow GPU miners and profits should resume to where we are not mining for a loss.
I realize Anti ASIC POW change was part of an EIP a few months back but you never finished the work but did agree it would need to be part of a fork with other EIPs. It seems this would be the best time to implement a POW algorithm change along side the reward reduction and difficulty bomb removal. I know you would hands down win over the mining community if you finally took serious the amount of profits ASICs are costing the community and forked them off.
One last thought. I participate in a lot of wall street conference calls and your hesitation and lack of urgency to roll out PoW/PoS with Casper FFG ahead of Devcon 4 curtailed a lot investment enthusiasm. It is at this moment in time that your team should double down and pour every last scrap of energy into ensuring Ethereum can complete the goals they have committed to this year. Since the 7/13 call when you talked about delaying until 2019, the ETH/BTC pair has lost 40%. It is now that the community needs to hear your enthusiasm and commitment to work day and night to accomplish your goals this year even if it means DEVCON 4 gets missed by your team.