Trucks can be rebuilt, and there's nothing stopping you from putting it in your base. The ability is very, very, very expensive and if all it does is kill an OKW truck it's honestly not very good value when you're already 20-25 minutes into the game. From the perspective of the British, it's one of the few things they get that can really punish the enemy for digging in. It forces them to abandon a defensive position and will smash static structures. I wouldn't have included it in the game, but to compensate I would have given the British stronger tools to dislodge camping OKW players. The Sexton is pathetic, base arty is pathetic, etc. Mortar pits are hopeless at the moment due to Leigs. The loss of an 80 fuel truck is the worst case scenario assuming the enemy player notices it coming in and bails out on units, I'd say it's an "ok" trade for 325 munitions. If you lost 2-3 trucks to a bombing strike, that's something you can avoid by spreading your trucks out. The temptation is there to put them all together to support each other, but you absolutely don't "have" to do that. Losing a 40 fuel mech or 40 fuel med truck is legitimately a bad trade for the British player unless they have huge numbers of assets that can capitalize on the loss of a retreat point. But realistically, the OKW player can get Sturms, Volks (shreks), Raketen and (late game) KT even with the loss of tech structures. Sturmtiger or JT if they have the doctrines. I think people are exaggerating how bad it is to lose a building temporarily.
I would make the warning of the strike more visible/notable. I've noticed a lot of players seem to not even notice it's been called down in the heat of battle, and THAT is why the ability is so strong. The perfect 1-2 punch in a team game is the commando ASO as the followup blow to using the Tac Support commander's Artillery Cover ability.
As demonstrated here.
From memory, does anybody remember whether or not a V1 killed a british truck in coh1? I honestly don't remember if it did or not.