[twistedpair]

L2 is very far from earth, well beyond the Moon. The Shuttle could never leave Low Earth Orbit, so it's a non-factor in repair missions once JWST is on station.

[usrusr]

I believe what was GP was getting at is that even in a "convenience orbit", a repair mission would be very unlikely.

[BurningFrog]

The scenario we're talking about is having JWT unfold in Low Earth Orbit, so it can be repaired there, if need be.

[buryat]

in Armageddon the Shuttles flew over the moon

[dragonwriter]

The shuttle-like craft were explicitly special, more capable craft (visually hinted at by the extra set of boosters and other design differences.)

Not that Armageddon was particularly focussed on reality.