Something else I read about, that doesn't sound like it involves far out voodoo tech to me, that I wish I'd live long enough to see, is putting a probe out far enough and in the right position, to use the Sun's gravity as a telescope lens.

...and (maybe) actually get pictures of extrasolar planets.

I don't know if those pictures would be like Hubble's view of Pluto, or in principle could be much better.

If I could have one wish for something extraterrestrial, that is more achievable, it would be close up pictures of Haumea. Eris and others too, but Haumea most of all.

I care nothing at all for Mars colonies, but the most exciting thing about Starship for me is the hope that maybe combining it with in-orbit refueling could enable quicker travel to the outer solar system and loitering/orbiting instead of flying by at top speed.