No problem...but there seems to be a juxtaposition in your desires...that I would solve by constantly installing snapshots and then immediately installing all needed packages.
- There's an inherent risk from installing from that branch, which is why it seems you agree with release builds
- but, you get the "up-to date software" to seem to desire - as like in a desktop distribution (it seems)
- I would advise to do this locally - for devices where I cannot, I own a test device and perform the upgrade on it first
This closely aligns with what I believe @jeff to have suggested. I'm just glad you understand that much worse could have happened upgrading a tunnel remotely. You'll learn for yourself if you have to drive kilometers and kilometers because of it.