The doc is now free to edit. The prospect of having to add in all of those numbers is no longer even remotely appealing to me. If you want info, add it yourself. https://docs.google.com/document/d/1WD6NBW5tgRLba1-i2tDuYJASZGHXaYq1g4dZUwpNV1I/edit?usp=sharing

[[[Maps]]]
Chapter 1 enemy inventories were altered. The amount of enemies with Hand Axes have been greatly reduced.
Gandolf/Munnir was nerfed, losing his Brave Axe for a Silver Bow.
Stats of bosses with multiple appearances have been rebalanced to improve ludo-narrative; for example, in 4.0 and prior, Elliot was level 1 in chapter 1, and level 15 in chapter 2. He is now level 10 in the former, and his inventory is more consistent with his later appearance.
Enemies with siege weaponry no longer carry standard tomes as well. Siege internally sets a character's movement to 0, but AI will still attempt to equip a standard tome and chase after an enemy if they would be in attack range but not siege range. The game freezes as a result. The siege armada outside Edda in endgame are excluded from this change.
"Gerald" has been added. 
The archers in Lamia's squad have speed rings instead of leg rings.
Blume's leadership has been reduced from 4 to 3 in both of his appearances. I was not aware the massive hit and avoid buffs were also given to the leaders themselves.
The Dancers guarding Bramsel's castle are now F!Myrmidons. Dancer animations can cause crashes when played from the enemy perspective.
Berserk has no effect on player units; I knew this, and gave Rodan a Sleep Staff, but forgot to remove the Berserk Edges from the Mage Knights you face right before him. Somehow. They have Sleep Edges now.
The ballistae in endgame are labelled as "Dark Mage". They are now called "Gelbenritter" instead.
The generic Belhalla enemies are all level 30 and carry an extra ring. 

[[[Classes]]]
High Priest now has A Light.
Hannibal no longer promotes to Baron. As a result, Baron's staff rank is once again A.
Archers, Myrmidons, Dancers, Lords, Princesses, and Mage Fighters can now cross rivers.
Armors can no longer cross rivers.
Thieves no longer have movement penalty in forests, and can also cross thickets.

[[[Patches]]]
Green/Neutral Unit combat animations no longer play. I got sick of them and felt they took away from the narrative.