Retrofit updates to existing models is probably moot, I can just imagine three years from now, flight time graphene composite batteries, active anti-collision vectoring and who knows what else will show up.I think there is a good chance that many of the existing models will be able to satisfy standard RID requirements - they already have the ability to transmit data via an internet connection on the mobile device, and they already have wifi band radios that they use to transmit - that's what Aeroscope receives. It should be as simple as agreeing standards and making firmware updates.
Satisfying the RID sooner rather than later by retrofitting software, might shorten the learning curve for engineering design of future standard models.