In the PR review club on "nVersion=3 and Package RBF" (February 22nd 2023) glozow stated:
But in policy we want to strictly loosen rules. Otherwise we could accidentally censor transaction relay for an application. So either we really really make sure nobody is using it currently, or just pick something that's nonstandard today. In a sense, we always want consensus changes to be soft forks, but policy changes to be "hard forks".
I was looking at the proposal for
nVersion=3 transactions and that seems to introduce a new set of "additional rules" that don't seem to be relaxations. So is it the case that ideally this wouldn't be the case but the
nVersion=3 proposal is ignoring this principle because they are needed for Lightning and multiparty protocols?