Uh-uh.. You said the cockpit was non-existant... "Non-existant" cockpits are the type found in the Monogram Spitfire, Zero, Wildcat, Corsair, Hellcat, Hurricane, and TBF kits, as I see it.. With those kits, with simply a pilot figure that gets glued to a bulkhead with feet dangling and a decal for an IP and all placed under a thick, one-piece canopy, I'd agree with you that the cockpit is "non-existant"...
However... The P-40B's cockpit, although rather simplified, is still there and consists of, IIRC, no less than eight parts, namely, a rear bulkhead, floor, panel w/ rudder pedals, control stick, flap handle, seat, and partials of the left and right side-panels...
In order for Monogram to bring the kit up to the "standards" some folks seem to think is "required" for a kit to be a good one, it would no longer be a Monogram kit, and it certainly wouldn't MSRP for 12.00... It would be some kinda Tamigawa, and cost 50-60.00...
Remember too, this kit was first released in 1964 for ten-year olds to build, and it was Monogram's first foray into detailed kits that weren't essentially toys, and included not one, not two, but three different decal sets, all for about 1.20... Each kit that followed got better, too... Look at the P-51B, P-47D, Typhoon, and Fw 190 kits...
Basically what I'm saying is this: Fixing what's "wrong" with a kit is what a true modeler does, even if he has to beat it into submission, lol...
And I'll stand by that, too...