What kind of tools would the community need to develop a multiplayer mod? Please let us try.
How hard could it be to create a simple lobby system that allows players to connect to each other. You can already fake a MP game on a single computer by allowing a friend to control an AI. A simple lobby system could make this possible between multiple computers.
I know nothing about programming. Someone else please provide the technical argument explaining why programming a mod like this would be very simple if we had the proper tools.
kplzthx.