Ehh, we all know the “answer” if we consider the game canon, but it doesnt make sense having locust, old cog and UIR characters in versus so lets remove that lol
Anyways, I think the dropshot does a better job in versus because you dont need the charge time and open rooms to use. Back in Gears 3 only a few selected maps had the HoD on matchmaking , and most of them were part of dlcs.
However it would be a neat addition to PvE, Dropshot and Boomshot are kinda useless on higher horde waves anyways. The hammer at least insta killed some enemies even on the last waves in gears 3.