You can do that kind of change in your own Bitcoin-compatible client, but you
cannot be sure that other people will run that version and that it will shut
down when you want. Many miners use their own custom software for mining
blocks, the same for mining pools. There are many clients that are
If MTP-11 is greater than 5 years after the release date of the current
software version, the full node should shut down automatically.
This would allow writing code that gives the community ~5 years to upgrade
to a version that executes a new hard fork while keeping everyone in
consensus,
