As it stands today - Starship Flight 14 just deployed 26 Starlink V3 satellites, 52 tonnes total. At around $110M marginal per launch, that is about $2.1M per tonne. A Falcon 9 at $30M carrying 15 tonnes is about $2M per tonne. So even as a fully expendable rocket, Starship is already basically in Falcon 9 cost-per-ton territory.
> and they need to find 50 tons more capacity by shedding weight elsewhere in the system.
Or increase performance in the engines and elsewhere. Falcon 9 Block 1 was 9000kg to LEO. The Block 5 that is flying now is 22000 kg to LEO. It's not magic. They already have a path forward with Raptor 4 and other improvements.
> needs a launch cadence fast enough so that refueling doesn't take 15 separate starship tankers
They don't need to launch special tanker missions for a depot. Their goal is to start launching Starlinks and AI inference sats en-masse. Once they demonstrate on-orbit fuel transfer, the easiest way is to fill the depot during normal missions. They can cut out some payload from specific flights to carry excess fuel and top off the depot. The sheer scale of their other flights is enough to keep it full. It is infrastructure that they need for higher energy missions. I doubt they are going to launch 15 dedicated flights just to fill up the tank.
> just a minor milestone on the way to that launch cadence: catching both stages.
They can hit massive cadence even fully expending every Starship, still work out kinks with reusability in the process and still make a profit off of Starlinks given their pace of production.
And given what they have shown so far, I think they are going to try to catch both in the next 2-3 flights barring unforeseen issues.
> Once both stages are reliably caught after a mission, refurbishment needs to be minimal
Nope. Even a cadence of once a week means that by the time they have 10+ launch pads up (in LA+FL+TX), they can be launching once a day if not more frequently. Their rate of production can already sustain that. What's missing is fuel source which will get built out in Louisiana.
> really big blind spot for the project management implications
Lol. The guy got partially reusable rockets and human rated spacecraft working at a cadence unheard of in the aerospace industry. Quite the accomplishment with such a blind spot for the project management!