- Brigands - Bretonnia's version of Free Company, armed with light armour and a choice of crossbows, shields, halberds and great weapons. These would be a special unit, and would not have the Peasant's Duty. Stats are the same as men-at-arms.
- Ballista - a basic bolt thrower.
- Onager/Mangonel - basic stone thrower (so lower strength than the Trebuchet, but can turn and move)
- Bombard (HERESY!) - a basic, unreliable cannon, that might not be allowed to pivot or move.
Right now, I'm personally considering at least the Brigands since that would allow you to have both crossbowmen (which, I checked, are actually never mentioned as outlawed in Bretonnia), peasant swordsmen, and peasants with great weapons. It also solves Bretonnia's no-mercenary issue (since historically, mercenaries were used a lot during the Hundred Years War) without necessarily breaking their policy on sellswords.
A Ballista likewise could work and give them some more varied fire power while still keeping them different from the Empire, though bolt throwers could be considered very taboo in Bretonnia since it was one that killed Gilles...
Onagers/Mangonels fit in the same way as the Trebuchet since they were all used at this time historically, but then again, do Bretonnia need another stone thrower?
The Bombard (again, HERESY!) is probably the one that would be most sore in people's eyes, since Bretonnians seems to universally abhor gunpowder. Still, it would give them something new, and fits historically speaking, though only just (I'd estimate Bretonnia to be based around 1300's France, Bombard saw battle in 1346 at Crecy).
So, what are your thoughts? Should any of these be included?