Robert Forster didn't even appear on screen until the second to last episode of Breaking Bad, yet he was a known entity since season 4. It would have been great to have him play the vacuum guy. But all they need is to show Kim make a phone call then get picked up by a car in the middle of the desert.
Exactly, Kim makes the call about her vacuum being broken, cut to a final goodbye with Jimmy. Alternatively it isn't impossible that Vacuum Guy has an apprentice, or that even that Robert Forster was the apprentice and there's a different vacuum guy! Someone real old who says Kim is his last job before he passes the business on the some young whippersnapper

They could always go the Saw route and show pivotal scenes with Walter, Jesse and Saul from Breaking Bad, then showing an alternate viewpoint where Kim is there (kinda like Saw did, showing Hoffman and Amanda being involved from the beginning). I just don't want Kim to die
The Howard thing messed with me. Sure, he was a douche, but he didn't deserve to be buried by Lalo for all eternity in the underground lab.
Howard definitely didn't deserve that. It's very reminiscent of what happened to Hank and Steve Gomez in BB I guess. I imagine the DEA may dig up to super lab and find their bodies. If Howard is ID'd by his DNA it's possible his reputation might be cleared, especially given by that point people will know Jimmy was up to his neck in cartel business.