A few more suggestions: A multiboard with team name, player name, scores as well as terraining could be nice.
There is a nice multiboard tutorial on thehelper.net
http://www.thehelper.net/forums/showthread.php?t=23952&p=178548
Download Senkin's multiboard and change the kill/loss triggers to score. Instead of the events "unit dies, unit is killed", you can change it to "unit enters region" to signify a touchdown. You might need to play around with it and modify the grids to match it to your map's needs.
Or you could create a multiboard from scratch with this tutorial:
http://world-editor-tutorials.thehelper.net/multiboard.php
ALSO:
Simple name change trigger:
Event: Player 1 Enters chat message with -name as a substring
Condition: none
Action: Change name of triggering player's name to entered chat substring (7,25)
You could also do a name change for the team as well with a name variable called "Team" that is displayed on the multiboard. Not everyone cares about the Seahawks and Stealers!
The only difference from the previous trigger would be:
Action: Change value of variable "Team" to entered chat substring (7,25)
EDIT: oops, and something like Player 1 Enters chat message with
-team as a substring
TERRAIN:
Add yard lines indicating 10, 20 ,30? Use some custom models/textures to give a feel of a stadium?
Gl with your map.