13. Only one player per computer/system for online matches... which I don't see as a huge issue anyway since most people who add 2 teams are lying anyway.
In W:A, teams' names in lobby share their color with teams' owner's nickname, which makes this tactic quite obvious, and therefore ineffective.
Can you not change the color of a second team hosted from the same PC? It's been so long since I've tried that I literally can't remember. For some reason I was thinking that you could do that.
wait
You talk about alliances colors/in-game team colors, while I talk about player and team name colors in lobby (host/join screens). There, take a look:
[attachment=1]
Team names have same colors as player names. Yellow Chef Team matches yellow ChefSkull, gray 6-UP matches gray Hamer, etc. If, say, Hamer would add another team (say, 2-UP), both 6-UP and 2-UP would have gray names, indicating that they belong to the same person.
(Turns out it isn't that obvious for some players over here...)
also, looks like I've managed to post that replay in the wrong topic :l
and BTW, don't we have a F-key customizator for W:A?
http://worms2d.info/FkeyRearrange