1) Horses and Armour take up slotsLight Horses (Sumpter-Palfrey) = 0 slot
Medium Horses (Courser-Eastern) = 1 slot
Heavy Horses (Barded and over) = 2 slots
Super Heavy Armours (55-60BA) = 3 slots
Heavy Armours (50-54BA) = 2 slots
MediumHeavy Armours (45-49BA) = 1 slots
All other Armours = 0 slots
With similar splits on Boots, Gloves and Helmets*
*It is your heaviest item of armour that determines the slots used up.  So Gothic Plate + Heavy Gauntlets, Gothic Plate + Leather Gloves & Leather Scale + Heavy Gauntlets all equal 3 slots.  This is to allow players to keep continuity with armour sets.
Desired Result- People using the heaviest armour/horses are forced to compromise on weapons and vice versa
- Can remove upkeep since stacking completely OP sets of equip is impossible
Reasoning- Regardless of what people think about them, slots have proven to be a good way of balancing weapon usage (No Great Maul + Danish OP heros).  Upkeep meanwhile has proven a bad way of balancing overall equipment usage.  So lets just use the good way and scrap the bad 
 Notes
Notes- Some 1H would need to be made 2 slots to keep variety
- some more 2H and Polearms would need to be 3 slots
2) Re-balance Xbows to the following stats (nerfs in red, buffs in green)Hunting Crossbow (cheap but pretty crap)
Missile Speed: 
40, Weight: 
2.5, Accuracy: 
80, Difficulty: 
10, Speed:
 175, Damage: 
35p, slots: 1
Light Crossbow (HA weapon)
Missile Speed: 
45, Weight: 3.0, Accuracy: 83, Difficulty: 
12, Speed: 
150, Damage: 
47p, slots: 2
Crossbow (Melee focused Hybrid Weapon)
Missile Speed: 
50, Weight: 3.5, Accuracy: 86, Difficulty: 
14, Speed: 
125, Damage: 59p, slots: 2, Can't Reload on Horseback,
Heavy Crossbow (Crossbow focused hybrid weapon)
Missile Speed: 
55, Weight: 4.0, Accuracy: 
89, Difficulty: 
16, Speed: 
100, Damage: 
71p, slots: 2, Can't Reload on Horseback,
 Can't SheathArbalest (Pure Crossbowman Weapon)
Missile Speed: 
60, Weight: 
4.5, Accuracy: 
92, Difficulty: 
18, Speed: 
75, Damage: 
83p, slots: 
3, Can't Reload on Horseback,
 Can't SheathDesired Result- Proper variation in xbows and reasons to use all of them not just 2 or 3