Looks like 3800+ of the B Mk X Wellington variant were built, making it the most numerous of of the Wellington variants available. As a long range medium bomber, it would certainly fill a gap in the British line up and offer a something mixed right in with the B25, B26, Ju88, and B17. With a bomb load of 4500 lbs (more then B26, less than B17), a max speed of 260-ish at 16k ft (various speeds are given by multiple sources), an awesome range comparable to the B24 heavy bomber, and defensive armament similar to the Ju88... there is nothing stopping it from being added to AH.

It was used by the British throughout the war.
so... lets turn this thread in to a "Please add the Wellington" thread.