Fietsbob, Yes, that sounds about right. I guess where I see it going is:
-- Fewer and fewer rings up front and more and more in the back
Until they either run out of room back there or the frame manufacturer makes a wider frame.

But, ultimately, it will all be electronic and increasingly computerized with a shaft drive instead of the old, inefficient chain.

And, the ultimate ultimate: automatic transmissions. All you have to do is steer and pedal...

But, in the meantime, we will continue to see the annual micro changes...