I think it’s completely viable. If I want to place a marker or reminder at 2:15, or 5:00, or 1:00 it’s completely irrelevant if the timeline is stuck in constant ripple mode. It’s just the reverse of the way markers worked in legacy. For years the markers were fixed, but eventually a preference was added to permit markers to ripple with the sequence. Keeping to X’s reverse thinking, there could simply be a preference to have markers NOT ripple. If Apple wanted to harp on the magnetic nature, they could call them Primary markers or something and apply them to the primary. Not the clip in the primary, but to the primary itself. So they would move if you extended a primary clip, rippling everything downstream, but would remain in place if you deleted a clip leaving a gap. The latter being an example of why having markers exist only on clips is a problem.