Yeah, you can, and if they are inaccurate in terms of the sensor stuff, then sure, they should be fixed. OTOH it's just a fact that all the merchant convoy escorts in the stock campaign are set to either novice of poor AI. In the latter case I don't think they react at all frankly. Even novice is rediculously poor, you can take em on on the surface at will. Setting fleet DDs to the same AI level they have in TFs, makes them fairly decent.
The other thing to remeber is that the real convoys with 12 ships and a bunch of escorts just did not happen until late '43 and beyond (and rarely in '43).
What is really lacking is zig-zagging. A typical zig-zag pattern was a 25-35 degree change off base heading every 5 minutes or so according to Calvert, shorter between turns if there was a sub about (say if the ship next to you exploded
).
tater