I agree with you, if you use have a radio in your system is because you want to control it remotely.
But I think that there is more reason:
Mysensor could be an additional function on my system, not the only one. So the others system will not work.
Safety requirement, the system shall run free without knowledged locks. If the GW go down for any reason, maybe beacause is broken, your system could be no work. Is not a common case, but it's a real case.
In my case, my node have a digital input (switch on the wall) and a digital output, the digital output (relay) is manage from the Mysensor node and from the digital input. If the GW is broken, the digital output will not work till I fix or change the GW. It can pass one day or one week it depend of the job. My wife will be very hungry if she can not manage the house manually with the tradional swithes on the wall.
Any way, it's a feature that I think that could be take into account for next release. Is not very important because is not usual has not GW in the network, but I think that is a safety requirement to add in next deliveries.
Thank a lot for your support.
It's a nice forum