I will be going through the Novus rules in preparation for this campaign, and if I find anything I'm not comfortable with I will put house rules for that thing here.
Firing Into Combat: If you roll double 1s you might have hit one of your associates instead of the target. This will be determined with a random dice roll made by the GM to see who gets shot at. If there are 6 possible targets he will roll a D6 for instance. Make another attack aimed at your ally and determine damage normally if you hit them.
Opposed Skill Rolls: Instead of using TNs there will be a roll off to see who can get a higher skill total. The highest wins.