Even though his stats weren't great, may I suggest Eddie Matthews for the less than a year division? He did hit his 500th HR with Houston.
Morgan still was top 10 in position player WAR all-time for the Astros. Finley was solid enough when here... I would say the list of we lacked patience to see them develop: Johann Santana, JD Martinez, Ben Zobrist, and Jason La... just kidding... Curt Schilling
I only have three definitive picks: Jeff Bagwell, Jose Altuve, and Craig Biggio. A lot of people come to mind for the Teddy Roosevelt spot.
On the mountain: Biggio, Bagwell, Altuve, Astrodome In consideration: Cruz, Cedeno, Wynn, Oswalt, Dierker, Scott, Ryan, Richard, Wilson
IMO Astros - Bags, Tuve, Biggio, Nolan Rockets - Dream, Harden, Murphy, Moses Texans - Watson, Watt, Dre, Hop
Harden? If it's true he didn't get to hand-pick the coach so he's picking up his toys and leaving town? Demanding a trade? Nope. Go lose to the Warriors with another team, "beard". Buh-bye.
Cruz, Ryan, Bagwell, Biggio. I hate putting those last 2 on but the numbers are just to gaudy. Those playoffs though.