In principle, I am right with ya. We need ways of beating (or at least coping with), the diffraction limit. It's fun to think of, say, stuff like this: https://arxiv.org/abs/1604.06351 (as far as big lenses go)

Using the sun as a gravitational lens would be pretty sweet. I have a feeling we will have some more tricks to play with E&M locally before we can go to space on that scale though.

edit: My own semi-blind musing has made me curious: metamaterials for super-lensing: https://arxiv.org/pdf/0905.0263.pdf

entanglment enhanced microscopes?!: https://arxiv.org/abs/1401.8075 (@shpx linked to this quantum stuff before me, by the way)