On my blog I posted an AAR using the changes I proposed to the Ultra FUBAR activation.
You can read it here: http://hosercanadian.wordpress.com/2013/05/07/ultra-fubar/
Reactive fire can and should be used in an assault.
Aim should not stack.
And how many weapons a vehicle fires is something for future discussion.
Of note, there were a couple of instances in each game where a player was presented with a choice of retreat OR firing back after failing activation. While a unit in cover obviously is safe, a unit in the open is facing a tough choice. The walker vs tank fire fight in the first game and both players hmming and hawing over the fight or flight response when they failed to activate. So a unit being suppressed may choose to flee and regroup or grit teeth and plow through.
Any suggestions or comments welcome.