Not likely, Lancs are 15 Eny, Halifax would probably be 20 eny, 4x 303s in the tail, and 13,000 in ords, tough call because the Lancs has 2x 50 cal in the tail which is far better defensive armament then 4x 303s.
True, but it isn't as if we're looking for bigger, better, faster, sturdier, better armorment, etc...
It's more about filling in the gaps with respect to various stages of the war- early, mid, late.
If it saw active combat in significant numbers, then it should be at least considered, if not added to the set.