@Chandler yes I completely understand this is not Amazon Prime. That being said, those of us who have committed to buying the bike, did so based on the original concept and our belief in SpeedX delivering it in a reasonable timeframe (personally I never believed I would be be riding the Unicorn in 2017, so I already was expecting a Spring 2018 bike).
Each time something is changed on the bike, it changes from the original concept, and then each one of us have to make a decision. Are we OK with the change? If yes, great. If not, how much money/time will it cost to get the bike into the state we want, or is it even possible?
When the bike originally changed from 52/36T to 50/34T, I did not like this change, since I was looking for a 52/36T gearing. No big deal, I can just buy the right gearing after-market and sell the 50/34T chainrings, so I was OK with this change.
Then there was the change from 140mm to 160mm rotors. Not a big fan of this one either (more weight, doesn't look as sleek), but again I can swap it after-market for relatively cheap.
Then there was the change from Quarq crankset to SRAM S952... this one I was OK with, since we were still getting all SRAM components and the same power meter.
For me, the FSA Powerbox upgrade presents a challenge, because we're talking about a $1000+ piece of equipment, not just a $100 chainring or brake rotor. It's good that we're getting a proven power-meter, but IMO it destroys the aesthetics of the bike (Pro/X) and introduces non-SRAM chainrings, with no ability to swap with SRAM chainrings. If I can figure out how to purchase a Quarq SRAM Red DZero and sell the FSA Powerbox without losing too much money, then I guess I'll be OK with the change once again.
I understand your desire to simplify production and support, but since you were already committed to 3 different Unicorn models, each with all different components, I find this to be an inadequate excuse. If you wanted to keep your support simple, you would have only had one version of the Unicorn, all with the same components.
How many more changes are coming, and how far from the original concept will the final product look like? Will we end up with a bike that we can't make changes to because of a bottom bracket standard? These are now my concerns.
Hope you understand our concern and frustration.