I don't like it either, seems a bit lazy. Just make the best pose mini, with the limitation the weapon gives you! I'd say!
Big weapons never was an issue before doing dynamic poses. See "jumping over the wall Wulver"! That guy is the most dynamic mini one could think of! Its a pain in the ass as gaming piece, but it didn't stop them, did it?
Or just leave the weapon of! worked great in the past also, see Bran Do Castro, Senor Massacre! Compare that to the new Daturazi.