I'd love it if one of the HK droids made it into the new movies, even if it was just as a hidden easter egg thing in a scrap shop or junk pile. Or as an actual character, even a just a random background character would be great.

It would be more awesome if HK-47 made an appearance in one of the new Star Wars Movie as a supporting role.
The sound of Metallic Clanking is heard growing closer, A blast door Opens slowly "Observation: It has been too long....Meatbags"

Imagine that, HK-47. If he showed up would that make him the oldest Droid in the galaxy?

Well it would be better if they made an old republic anthology film.

@"elek2008" It would, and Can't Droids Upload their Personalities to different droid Bodies? I know IG-88 can. So maybe that could be an explanation to his appearance.

I wanna seem him maybe in a more Junk form, whats it been 2k years or something? I want to see battle damage on him. Maybe even have limbs from other droids or a mis-matched eye or something. Perhaps he can show up with some bounty hunters or something in the movie after Finn or Rey maybe since she "stole" the Falcon from that Junk dealer.