for sure sc1 is amazing multiplayer game. What i would love to see is
1.Total custimizable map, place my own hexes just like sc2 editor.
2.New units like para troopers
3. Desert needs to be a tiny bit wider.
4. Every magor can be played by a human seperatly with selectable sides. Have a selector like dogs of war for this (the pre game now known as axis and allies) http://www.the-underdogs.info/game.php?id=3128
5. Option of weather affects
6. Diplomacy option
7. Better ai like attacking in full force as germans in russia, even when i gave AI to much they would only send piece meal forces to attack moscow. everything before that was fine for the most part.
Thats all i can think of for now, still an amazing game.