I like the PS job Norman posted. Looks much better than the all black plastics.
Scot - I agree, this is a much better and more cost effective way to do market research than previous methods;
You quickly get a wide variety of thoughts and opinions from all over the world with out having to spend a dime on travel.
The opinions are likely to be more honest, as everyone has keyboard courage- something their less likely to have in person.
You are communicating with the folks that actually will buy the end product.
The thoughts and opinions are mostly reasonable and intelligent and coming from folks with a good cross section of riding experience.
Now- come and test those bikes up here in Ontario

I'll set it up.
You guys that have hardly ever change CS's; you need to come up here and ride the Canadian Shield. Lot's of roots, mud, rocks and water. The mud holes are composed of an abrasive mix of granite sand and loamy soil. Chews up metal parts in short order.
I also would way rather change a CS sprocket than a rear; They're way cheaper to buy, way faster to swap on current bikes, and you only need an inventory of a 13, 14 & 15t to effect significant gearing changes quickly tailoring the bike to the terrain/ride conditions. Plus you can easily carry one or two with you if you want.
The video of the CS swap on the BMW does make it look a bit easier than I originally perceived, but you still need a clean bike, a stand and quite a few tools to do the job. It's certainly not something you're likely to do out in the bush. I agree the concentric shaft is a great idea and a step forward. The BMW method is not how I would have designed it, but then again I'm not a design engineer.
Maybe Husky will source the CS sprockets from Dirt Tricks and make the whole issue mostly moot.???