If anyone would care to read up on this, it is very clear that the community can only do part of such an application (interface):

http://source.android.com/porting/stk.html

1) STK RIL: Low-level layer provided by the vendor plus libril.
2) STK Telephony: Protocol translation layer that converts raw messages provided by the STK RIL to application level messages.
3) STK Application: Provides the user interface interactions needed by the STK.

We would (easily) be able to develop 2).
3) Is the STK application that we are trying to communicate with.
AND 1) We cant do nothing about this one, that is all up to Nokia as the RIL refers to Radio Interface Layer (see http://en.wikipedia.org/wiki/Radio_Interface_Layer)

So, as for the Brainstorm, there is only ONE solution, the RIL needs an update, and only Nokia will be able to do this. Hence also the missing, previously reffered to d-bus messages!

EDIT. Oh! and it might not even be possible for Nokia to do this update, as it actually may require other hardware, or chip replacement.