TL;DR. The Governance team proposes changing the default value of NervousSystemParameters.automatically_advance_target_version from false to true, enabling automatic advancement of SNS target versions for newly launches SNSs. This would enable potentially time-sensitive security fixes to be delivered to the SNS as soon as possible, even before the swap finalization.
Background. Recently, we delivered the following new feature: Proposal: Opt-In Mechanism for Automatic SNS Target Version Advancement. This feature has already been enabled by the OpenChat SNS, so unless they decide to opt out, that SNS should never again fall behind the latest blessed SNS version. The newest SNS features become available within just hours (rather than days or weeks) after they were blessed by the NNS. We encourage other SNSs to adopt automatic target version advancement, too, which can be done via a simple ManageNervousSystemParameters proposal that sets automatically_advance_target_version to opt true.
This proposal. The next logical step is to enable automatic advancement of SNS target versions for newly created SNSs. Opting out will still be easy, also via the ManageNervousSystemParameters proposal, so each SNS will still have the ultimate control over when it upgrades.
Please let us know in this tread if you have any questions and suggestions!