Personally, if I ever installed a system as a dealer this would by my minimum:
Full network access
Remote monitoring with OvrC
Promote native touch screens over the mobile app
Avoid third party solutions as much as possible (even though I do have some in my own system, but would prefer them being replaced with a good 1st party alternative)
When the network is solid, ISP is solid, and rf interference is low, then the system should be very reliable.