No.. I got an idea!
Revise Detect Ambush to Detect SnipersThat should let us spot the guys sneaking up to hit our mages, or attack our camps at night. Then we can ride them down with cavalry or always have our shields in the right places, so no getting suprised while casting Lucky Strike.
Plus it's an apprentice spell, so we can have the mage apprentices keeping watch for the full mages.
Make Gust of wind more powerful [1]: Taricus
Better Troop Lamellar [1] Mardent23
Detect Snipers [1] Devastator
Our new spell is great, but it doesn't work if the mage gets killed, so our revision needs to keep our mages alive. Detecting those snipers would go a long way for that.
Lamellar wouldn't, (our mages are already fully kitted with it) gust of wind might, but detecting the snipers would let us get the shields up, and direct antimagic towards them to cut out the explosive arrows. It would also help at night and keep them out of our camps.
I'm for expense chit on shields for the same reason. It'll mean more shields around to give cover, as every apprentice could then carry one, as well as other important targets who might become sniper-fodder.
Detect Snipers also should be pretty easy as a guy sneaking up to shoot you in the head should be thinking pretty similar thoughts to a guy in the bush waiting for someone to shoot in the head.
Expense credit: Shields Because they'll do more to keep mages alive, and that's what we need most of all.