That's completely unworkable... Starlink sats are tiny and by being replaceable you don't want to put extra expensive equipment on them. There's not the space t

That's completely unworkable... Starlink sats are tiny and by being replaceable you don't want to put extra expensive equipment on them. There's not the space to put the primary and secondary reflector you need. So far we don't have a way to do the same kind of synthetic array with visible light we can do with radio waves. Even once we get past that issue you still have the light gathering issue of small reflectors where the kind of extremely dim objects astronomers are most interested in can't be imaged properly with small reflectors. Starlink sats also want to keep their bottom pointed at the ground at all times because that's where all the fancy radios live while telescopes need to freely point and track their targets.