@Danielhiversen I see your point but I think being able to calculate it forward and backwards would be very helpful in many situations.
For example I’m currently trying to switch from a pilight setup with “selfmade” hardware to RFXtrx, hoping its more robust and has a better range when it comes to receiving. From the pilight setup I have all IDs, Unitcodes and Protocolls available, which you also get when using the RFXtrx Manager Software and which are quiet common out there. So in my case, it would be way easier and faster(!) to now, how to calculate the devices ID and adding them to the config, instead of searching for each in the autodetect list, step by step by step… That’s how I landed in this thread
In addition, since I have some devices and automations running, after a view minutes and my family at home, the autodetect list is so long, I can’t tell what is what anymore. So I have to wait for a “maintenetce window”, when they are gone!
So sum it up: I think there are many use cases out there, where this would be handy.