wasp is a nice idea but it's not sufficient.
The ost have the significantly better flameHT and even then mortars and flamethrower are still the preferred option.
How can the wasp be expected to serve as the british's main garrison cleaner when it is inferior to the rarely used flame HT?
Incoming wasp nerfs by the way, it costs 10 fuel and 75 munitions (from 70)
Now its more common place I think for UKF to build trenches infront of buildings or sandbags