What would be needed to have a significantly better space telescope than the JWST? A monolithic mirror might be an good improvement, but we would still be limit

What would be needed to have a significantly better space telescope than the JWST? A monolithic mirror might be an good improvement, but we would still be limited by the size of the fairing. Even better than that would be to create and grind the mirror directly in space, but this would require orbital manufacturing abilities. And this means big infrastructures, so big launches. Or maybe we need to send a telescope a few hundred AU away from the sun tp make a solar gravitational telescope! Once again, big rocket required. JWST is a fine telescope, but the bottlenecks we face going forward require better launching capacity.