It never had a B4 in it. It had an over-the-top bombing run and salvage when originally released. It does need to be reworked, but any commander without Mark Target and some type of tank that can chase something down is always going to be a worse "tank hunter" than Mechanised Support or Guard Motor.
I would like to see a "command" T34/85 added to it, which has a 20% reload aura and Mark Target as an ability.
PTRS penals would need to be reworked. They're okay in small games, but bad in large games.
It did had B4 briefly tho.