As a person who doesn't understand how copyright works, I'm just going to wait it out until we get a clearer picture of what is going on.
As for Bandana Dee, time to bring out this image again.
"Waddle Dee has become one of the most beloved characters in the Kirby series."
And thats from the Dream Collection book so it is straight from the horse's mouth.
I'm not going to say anything about his actual chances of getting in, but Bandana Dee does justify his inclusion if he does get in. Not to mention he has been in more games then both King Dedede and Meta Knight and has several roles that aren't just being a generic enemy.
He is popular, has many roles, been playable numerous times, (if you count Waddle Dee to be an extension of Bandana Dee. If not then I'll admit he was playable only once).
Anyway, thats all I want to say. Do with that information what you will. If you still don't care, thats fine.