The respect could be shown with an experienced and slightly older but still prime Hank Pym, while still simultaneously introducing Scott Lang as his successor. I'm not even a big fan of that character but the way he was screwed over in the MCU was awful. Being treated better in comparison to the comics doesn't really make up for it. And if Marvel really thought Pym was treated with respect in the MCU, they would've done the same thing in the comics. They did the opposite which shows what they think about him. But if he was more prominent and younger in the MCU, they would've likely had no choice but to give him better characterization in the comics. They don't because he's not the Ant-Man the company that owns them is invested in and they don't have to do anything to "fix" him. Sounds familiar.
Usually the whole point of Hollywood aging up a prominent legacy character so much is to either get him out of the way as quickly as possible, or make him a supporting player whose main purpose is to prop up the other character(s). I'm not interested in seeing Hal Jordan in a role like that. The actor they cast as Guy in the HBO Max show has to be pushing 40, so I don't mind if Hal is also in his 40s in the DCEU, but to cast a 60 year old actor as him? Nah. The only positive to me about someone like Tom Cruise potentially playing him is that Cruise is infamous for taking over the entire production of his features, which means that Hal probably wouldn't be treated as a side-character or turned into a villain, but that's where the positives end.