What the hell does the B4 killing mediums in 1 shot have to do with ambushing and having quick strike heavy damage abilities/tactics that rely on said ambush? Lik I said earlier, the B4 takes forever to traverse which makes it non-viable for this doctrine because it would take forever to use unless the ambush is right in front of it, in which case might as well get rid of ambush abilities and get recon ones to spot for the direct shot ability, then rename the doctrine to counterattack tactics.
B4 doesn’t fit the theme. Stop recycling arguments.
You're misunderstanding the ambush point. You aren't using the b4/ml20 to carry out the ambush, its the target to lure things through your ambushing units (tank hunter cons, AT guns, AT vehicles). That is the reason relic put the howitzer on the commander
From the patch notes where the Ml20 was added:
"Our initial testing has found that
the commander lacks strong measures to draw opponents in to take advantage of the commanders ambush capabilities. In order to resolve this we are adding the ML-20 howitzer to the commander."
Unless your opponent picked a commander that has an off-map to delete howitzers, they're gonna need to send a tank back there to destroy it. Which you then ambush