Unit Changes:
• Foot Squires have had their melee attack and melee defence slightly lowered, but their hit points have increased.

Building changes:
• Industry level 3 can be built at a level 3 settlement, but now only gives +1 recruit rank to men-at-arms and gives 200 income down from 225.
• Apothecary no longer gives +5 chivalry
• Guild Hall chain now gives province wide income bonus, and its effects have all been modified slightly
• Order hall is now cheaper and can be build in a level 3 settlement, but no longer allows the recruitment of Knights of the Realm.
• Farms gives 250 income down from 275
• Tavern chain gives higher public order in the province, but less to adjacent provinces

Technology Changes:
• Charity reverted to its vanilla state
• Almshouses no longer gives +1 public order but it now gives +2 to peasant economy limit
• Peasant smiths no longer increases peasant economy limit
• Many technologies have had their income boosts modified to be lower

My thoughts: These changes have been made to make the peasant economy feel slightly more relevant again, for example by removing the boost from Charity you can no longer obtain +2 to the limit in a pinch, same goes for the peasant forges tech where it seemed unfitting.
The change to the Guild hall was made to make it a more appealing building, making it cheaper and able to fit perfectly into any settlement makes it a better choice in many situations than it was before. Trade increases are powerful but only when you have trade partners, so the previous iteration had many situations where you couldn't consider it. Now that it gives a province wide boost, it should be more viable.
The change to industry was made simply to make it more viable in smaller settlements where you would likely still only want farms, its difficult to balance given that in this mod it can actually be used together with farms, which is why I reduced the income bonuses technologies give to industry.

Unit Changes:
• Knight units cost and upkeep decreased
• Peasant unit upkeep increased across the board
• Peasant Bowmen damage reduced but range increased
• All Men-at-arms leadership reduced by 2 (reduced by 4 for longbowmen)
• Trebuchet damage reduced and cost increased

Technology Changes:
• Farming techs gives slightly less income
• Many techs give less increase to max peasant limit
• Crusade decree should now work as intended, but only gives 5% movement range
• Fair realm decreases barracks cost by 5%
• Fleur-de-lys gives +2 recruit rank to damsels
• Heralds Leadership increase for peasants removed
• Bountiful harvest only increases replenishment for peasants
• Noble banners reduces men-at-arms recruitment cost by 5%, no longer gives replenishment increases to peasants and leadership increase for men-at-arms reduced to +2
• Peasant forges +2 attack to peasants removed
• Men-at-arms reform gives +8 armour and +2 melee attack down from +10 armour and +4 melee attack

Building Changes:
• Stables level 3, all industry buildings and level 3 mill are now cheaper
• level 3 industry gives 225 income down from 250, level 3 farm gives 275 income up from 250
• Carpentry and Smiths give more income. Carpentry now counts as timber income (so the carpentry tech gives +50% income to it)
• Barracks chain now only reduces upkeep for peasant melee infantry, not all infantry

Other Changes:
• Bretonnia starting peasant count decreased by 2
• Peasants duty now works as intended, but only gives 3% replenishment to non-knights down from 8% (technically up from 0% since it was bugged)
• Fay faction trait gives +10% replenishment down from +15%. New trait added: -4% upkeep for infantry
• Virtue of empathy gives +4 melee attack to peasants, down from +5

Knightly Tempered Ability now gives +10% melee attack and +5% melee defence instead of weapon damage, +5% ward save instead of 10% physical damage reduction, and deactivates when the unit goes below 50% leadership rather than health.

Royal Men-at-arms now have two swords.
Some units have had their stats tweaked, such as Grail Reliquae (mainly damage numbers)