It would be nice to have a quick-glance way to know if you have a colonizable planet in a system. The biggest benefit to this is mid-to-late game where you have lots of system but not necessarily colonized all of the planets in them. If I research a new tech that allows me to colonize new planets, I wouldn't want to go to each system one-by-one and see if I can now colonize of the the planets.

Clarste wrote:

There is a quick way. Colonizable planets are shown as filled in white dots on the galaxy view. Uncolonizable planets are empty dots, and colonized planets are filled in with your faction colors. It took me a while to realize this, but it's quite convenient.

OMG. I totally missed that. Thanks!

In terms of visibility, though, they could make it stand-out a bit more. They kinda blend-in with the stars in the background.

Also, if it's pulsing it has a curiosity to probe.  I think it's a really elegant design (which is unsurprising considering the team working on it ;)