I respect the approach. I personally think that Han being immature and pushy is an intentional character trait (and is why I think it’s 100% in-character for him to act the way he does in ROTJ; he was always insecure, that bravado was his way of hiding it) which fits the flawed hero he is, but I also understand if one prefers to make him more mature.
Hear me out. . . Technically Han isn’t immature and pushy in A New Hope the way he is in the other two. For my money Episode VI Han is the best Han, so I cut out all of the “non-IV” Han moments from V-VI. It’s all a matter of taste, but if I can have the funniest/coolest version of Han Solo, then that’s the one I want!