I agree, an imago loop drop would be great. The problem is if Bungie did that there would be a lot of people on these forums complaining about "recycled weapons and content". I think the big issue here is the activity. Maybe they should have made a few more changes to it than they did.
Good old bungie never fails to disappoint. I get the nostalgia but wasn't imago loop kind of a meh weapon anyhow?
If you got a god roll it was good, otherwise it was meh
It was the next best thing to fate bringer and was farmable. It was an iconic weapon that almost everyone who was playing at the time recognizes. But you are right, it wasn't crazy good. It just had its place.