I would love to see the addition of two things:
Replays: The ability to re-watch matches.
Spectator mode: The ability for someone to join a game without a fleet, and just observe.
- Have vision of entire map
- Be able to see the production of ships I click on
- Be able to see what research each player has researched, and is currently researching.
These two things will do WONDERS for helping to cultivate an e-sports scene.