The Graham Farish Class 08 is available with DCC sound - in N gauge! to be fair, that doesn't have the HM7000 wifi, but it could, I'm sure it could have been done. Perhaps given time, and once the initial surge has died down, Horby will be able to revisit this, either through redesigning the chassis or shrinking the decoder... In the meantime, however, I'm happy to make do without sound!