I don't think a list of all habitable planets would be helpful in an immense game
I really must protest, Parrottmath. In GC2 on immense galaxies, having the ability do sort a list of all of the habitable unowned planets I had discovered by class really helped me choose which planet I wanted to send a newly created colony ship, I found it immensely helpful, and I am eagerly awaiting the optional sort options they will (I sincerely hope) they will provide when they include that feature during the beta.
BTW, IMO the game cannot be considered shippable without all of the sort options for the planet list that GC2 had.