you wanted to make the troop tree really big for the archers?
How about this...
Apprentice Hunter
(No armour, short bow, - 1 damage arrows, knifes)
Game Hunter
(No armour, Short bow, +1 damage arrows, cleavers)
Bird Hunter
(Bad light armour, Short bow, +1 damage arrows, cleavers and shield)
Master Hunter
(better light armour, short bow, +2 damage arrows, arming sword/axe and shield)
Scout Training Bowman
(Stubborn Horse, leather armour, good bow, +2 damage arrows, arming sword.) (Good light armour, good bow [same as Scout], +2 damage arrows, arming sword)
Fast Scout Trained Bowman Training Crossbowman
(Heavy horse, longbow, better armour, +2 damage arrows, good sword) (Better light armour, longbow, +2 damage arrows, good sword) (ok heavy armour, crossbow, good bolts, axe)
Fast Master Scout Master Bowman Trained Crossbowman
(Better horse, better armour, better bow, +2damage arrows, better sword) (great light armour, longbow, +2 damage, goodsword and shield) (Good heavy armour, better crossbow, better bolts, axe and spear)
Fast Scout Leader Castle Guard Master Crossbowman
(everything is great, has good shield) (Everything is great axe+shield/sword+shield) (great heavy armour, good crossbow and bolts, spear+shield/sword+shield/axe+shield)
Hunter - Game Hunter - Bird Hunter - Master Hunter - Scout - Fast Scout - Fast Master Scout - Fast Scout Leader
Hunter - Game Hunter - Bird Hunter - Master Hunter - Training Bowman - Trained Bowman - Master Bowman - Castle Guard
Hunter - Game Hunter - Bird Hunter - Master Hunter - Training Bowman - Training Crossbowman - Trained Crossbowman - Master Crossbowman
That's all i got atm.