You know? I wondered this same thing about theses ships... like they were retrofitted to attack, but were really irrigation or crop dusting vehicles.Maybe it's a crop duster, or some kind of plow?
Most people don't look too deep at what is said in the movies... but if you remember, there was a line from one of the workers on Hoth about "adapting the speeders to the cold temperatures". The "Snowspeeders" were not designed for snow combat. The T-47 they used was an atmospheric industrial cargo hauler. They had a tow-cable on the back to tow repulsorlift cargo containers and didn't come standard with blasters.
Are these vehicles going to copy that part of Empire Strikes Back? I'd say pretty darn likely.