We should expect to see a bunch of alternative configurations for Starship. A big fairing is just one possibility.
On Falcon, and in the future with conventional Starship, Starlink launches are volume-limited, not mass-limited. Thus, a Starship with more interior space would allow them to send up many more satellites per launch.
When they get their production line up, we might see them launch Starlink in disposable second stages, dispensing with heat shielding and landing engines, and with substantially smaller fuel tanks, leaving room for more Starlink cargo. They could park the carriers in orbit, and gather up the Raptor engines to bring home once enough have piled up there; and maybe turn the empty hulls into a fuel depot.
Launching, say, 150 satellites at a time, that's more than a hundred launches to fill out the constellation. It should not be hard to find a use for some fraction of those hulls given they have already been boosted to orbit.
They'd need a stage0 systems built specifically to support a 15m large fairing. I'm not saying this will never happen, I just don't think it will be on the cards for a long time, if at all. Basing things around 9m/12m may be a better idea if they want to get something in the sky sooner, rather than later.
I am thinking now that if they want Starlink to be a demonstrator for their freight service, they will more likely eat the cost of launching on non-customized vehicles, and of landing, refurbishing, and re-using them, instead of leaving them in orbit.
On Falcon, and in the future with conventional Starship, Starlink launches are volume-limited, not mass-limited. Thus, a Starship with more interior space would allow them to send up many more satellites per launch.
When they get their production line up, we might see them launch Starlink in disposable second stages, dispensing with heat shielding and landing engines, and with substantially smaller fuel tanks, leaving room for more Starlink cargo. They could park the carriers in orbit, and gather up the Raptor engines to bring home once enough have piled up there; and maybe turn the empty hulls into a fuel depot.
Launching, say, 150 satellites at a time, that's more than a hundred launches to fill out the constellation. It should not be hard to find a use for some fraction of those hulls given they have already been boosted to orbit.