Two usability improvements.
First, the game reuses alien class names in a really confusing way. I was taking over someone else's system, and I kept having classes flagged with reporting names, then learning the real name of the class, then having the name get reused for a new, completely different class. For some names, this happened more than once. It would be extremely nice if it just crossed the name off even when you found out the proper name.
Second, when you use the autoroute by system, it currently sorts systems alphabetically. This is annoying when you have a 100+ systems, and keep wanting to send ships back to Sol, most of the way down the list. I want to go to populated systems far more often than I want to go to empty ones, after all, and I doubt I'm alone in this. So why not sort to show populated systems first, then unpopulated systems with colonies, then empty systems?