This may be a silly question, but would you be able to create an interferometer style telescope array in space via a platform like starlink, ie small, inexpensive sats? Would that reduce/eliminate the need to launch large singular antennas?
Though not the same thing, you may be interested in https://en.wikipedia.org/wiki/Laser_Interferometer_Space_Ant...
One would need to go to space for that of course.
People want to put a radio telescope on the far side of the moon, so that it doesn't have interference from terrestrial RF sources:
https://en.wikipedia.org/wiki/Lunar_Crater_Radio_Telescope
...and your spatial resolution is proportional to the size of your telescope. So you could have really high resolution if you speckled your interferometric telescope array units around L1, L2, L4, and L5.