On Sun, Mar 26, 2017 at 2:05 PM, Peter R via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> wrote:

With a tightening of the rule set, a hash power minority that has not upgraded will not produce a minority branch; instead they will simply have any invalid blocks they produce orphaned, serving as a wake-up call to upgrade.

False. With bip9-based soft-fork-based activation of segwit, miner blocks will not be orphaned unless they are intentionally segwit-invalid (which they currently are not). If you have told miners otherwise, let me know.