The problem is it’s not linear. You can ship until you can’t (or can but very very slowly). It’s taking all of the hit now or a little at a time until things co

The problem is it’s not linear. You can ship until you can’t (or can but very very slowly). It’s taking all of the hit now or a little at a time until things completely grind to a haunt. I’ve been involved in a few rewrites as well. Some went well and we had a noticeable productivity gain. Some went badly and we were stuck for a long time fixing bugs and corner cases we had already addressed in the legacy stack. It really depends on the situation.