Few comments from the sound demo video:
A few times it seemed the chuff rate and loco speed weren't quite in sync, may be just camera angles/editing but is it intended they will be properly synced?
The loco finish seemed a little dull. Will the production ones have a glossier finish?
Finally there was mention of active braking on function 2. I assume this works like the zimo braking, can this be added to the new deltic chips via CVS (if so any chance of a guide on the accurascale website?)
Otherwise looks stunning!