So I wanted to share a couple ideas here
For the first one this is my suggestion to further improve Rifle Company. The M3 Assault Halftrack would fit very well both thematically and also help push a more aggressive playstyle with Riflemen. It would be an excellent frontline source of healing, reinforcements, and some extra firepower. I think overall it would be a great addition to the commander without being to massive a shake up. The space is made by just bundling all the riflemen stuff into a single trait that can be called whatever.
The second doctrine I want to bring up is the Armor Doctrine as even with the various changes I think it just needs more help. I think the buffs to the 105mm was a good addition and has made it more worthwhile. The 240mm buff I don't think really helps the ability enough to make it worth the cost. On top of those 2 changes I think the M10 needs something else. It just doesn't measure up enough to be worth really getting over a Jackson.
Armor Company
Assault Engineers
Elite Vehicle Crews
M10 Wolverine - Add Smoke Shot
105mm Bulldozer Sherman - Current changes
240mm Artillery - Replaced with TOT artillery strike from infantry doctrine.
So the replacement of the 240mm with a better artillery strike would be an overall improvement by having a more consistent and versatile artillery.
Now the change to the M10 Wolverine is probably the thing most people will be confused by however I think it could be an extremely useful ability for the unit. Historically M10 Wolverines were issued smoke rounds to shoot at the enemy and in game this could help wolverines in a couple ways. First it could obviously be used in a defensive manner to help block line of sight and let the fast moving M10 escape, however it can also be used offensively by throwing smoke in the facing of enemy armor and then using the extreme speed of the M10 to reach a flank. There is even possible a bit of utility by using the smoke to block line of sight and then using the new 105mm barrage to ruin enemy infantry or AT positions. I think it's at least worth testing out as it gives the M10 more utility over it's bigger cousin which is something it sorely needs to be worth using.