Granted, that was a silly example. The point is you can do any speed within reason, which sets you up for 11-, 12- and 13-speed (which is also on the way), as long as you have a derailleur with the a suitable parallelogram and cage length*, and allows you to upgrade bits as and when you see fit. If I buy Shimano 11-speed Di2 now I am committing future me to throw the whole lot out next time I want to upgrade (or sell it on eBay).
I just think it's going to work out cheaper and more versatile by far in the long run, once someone does it.
* folks are going to be on 11-30something doubles for a while I think, so there should be plenty of derailleurs around for that
Edit: anyway I'll quit banging on about this now. Maybe I should build one myself and keep my mouth shut until then
Clearly the kind of consumers buying Di2/eTap are not interested in cheaper, more versatile, or the long run.
Maybe not cheaper but certainly more versatile. I can haz ALL THE BUTTONS. Long run, well current gen Di2 is 7 years old. How long did Shimano's 10mm chains last? Or Biopace?
Granted, that was a silly example. The point is you can do any speed within reason, which sets you up for 11-, 12- and 13-speed (which is also on the way), as long as you have a derailleur with the a suitable parallelogram and cage length*, and allows you to upgrade bits as and when you see fit. If I buy Shimano 11-speed Di2 now I am committing future me to throw the whole lot out next time I want to upgrade (or sell it on eBay).
I just think it's going to work out cheaper and more versatile by far in the long run, once someone does it.
* folks are going to be on 11-30something doubles for a while I think, so there should be plenty of derailleurs around for that
Edit: anyway I'll quit banging on about this now. Maybe I should build one myself and keep my mouth shut until then