I admit, that I do not understand the need for the A-111-2 as it was
planned. Such modules invalidate the basic idea of an modular system.
All functions of the A-111-2 can be achieved by the combination of
existing modules.

I think a follower for the A-111 would be great. But it would be enough
to be a high quality triangle core VCO, with excellent tracking on  a
wide range.

I couldn't agree more with Florian