Thought I'd add my suggestions by way of comparison and see how many ways the same cat can be skinned!
These are the changes, everything else is as per Blucher. The Fire and Fury basing is of course optional and refers to the original rules, not the Regimental ones. They were just what I had available at the time and happen to pretty much conform to the size of Blucher card units in this configuration.
Basing
Fire and Fury 15mm bases:
Two ranks of three for Infantry, two ranks of two for Cavalry, two stands wide for Artillery
A command figure must be used for all Divisional and Corps Commanders as well as Artillery Officers
Infantry
All units have the Firepower, trait and an Elan of 6
Prepared does not apply in the game.
Conscript (Recruits) infantry does not get the Firpower, trait.
Skirmish trait is not used and Volley range is now 2BW.
Cavalry
All units have the Mobile trait.
Cavalry may not charge formed Infantry or Artillery within their frontal arc.
All Cavalry is rated as Light and both Union and Confederate units have an Elan of 4. Late war Union cavalry may have an Elan of 5
Cavalry take a move to dismount and do not have the Firepower trait.
Artillery
All Artillery units have the Heavy trait.
Short range is extended to 3BW.
Any artillery unit that takes two hits in a turn is silenced and needs to be rallied before it can fire again.
Each Artillery Brigade has its own Artillery Officer. These have three roles. 1) They may add one dice per artillery unit when firing or 2) They may resupply one ammo point per turn to an artillery unit. They can only do one of these for a single unit per turn. Additionally they may 3) Rally a unit so that it may fire in the next turn. This does not add an ammo point; it only allows the unit to become active again. As with 1) & 2) above this can only be applied to one unit per turn.
So, Artillery Officers can only perform one of these actions on one unit in any one turn.
Entrenchments
Both sides can use entrenchments at the start of a game, depending on the scenario.
Bonus Traits
Shock, Steady and Conscript may be used on both sides dependent on scenario but these will never be applied to Cavalry units.
Movement
Reserve moves may pass through difficult terrain at the units lower movement allowance and no reserve movement may approach within four base widths of an enemy unit.
BTW: I like cats – I've got five and all still have their fur!