It's a lot to remember. I don't know how much historical gaming you've done, but you're definitely inviting the pipe-cleaners of organization onto the table. "Yellow needs to test at the end of the phase, orange is disordered, red is fleeing..." I know it's not in the rules, but keeping track of what units are in what status can be taxing. One thing Warhammer used to do well, at least, was keep the excess bits off the table.
That said, not at all opposed to what you're trying to do. I've seen panic destroy whole armies on Turn 1, which doesn't make for much of a game (not a game at all, if your opponent has his entire force flees on a chain of failed tests...but I digress...and I think that possibility went away in 7th...).