Proportional torque PAS with modern Hollowtech II BB?

[thunderstorm80]

Hi,
I am looking to have proportional motor-torque to my pedalling torque, and not those simple chain-ring magnets which only provide the CA with ON/OFF assistance. (and a fixed power output which can be manually varied)
All the options I see (THUN, TDCM, etc...) rely on the diminishing tapered square BB standard. Getting compatible cranks for it becomes more and more problematic, so it's not a long-term smart purchase.
I use the modern hollowtech II bottom-bracket, which means it would be an awful downgrade if I replaced it with tapered-square based drivetrain.
Is there any solution for the modern hollowtech?
(Maybe one of those products that roadies use which senses their power output via chain tension, but that can be mated with the CA)

 

[Triketech]

If you call an improvement awful, than it would be awful.

DaVinci Cranks are sweet.

http://www.davincitandems.com/components/#cranks

 

[thunderstorm80]

If you call an improvement awful, than it would be awful.

DaVinci Cranks are sweet.

http://www.davincitandems.com/components/#cranks

I said "awful" because all you can find nowadays with this standard, are low spectrum quality products. (heavy, tend to wrap and bend)
But, what you showed now is quite nice, but it's way more expensive compared to my hollowtech triple crank...