Personally, they shouldn't remake anything. They can repolish things like I stated above to full on remake episodes just doesn't make sense because it takes away from the previous episodes. Remaking the episodes would feel like the previous Kanto, Johto, and Hoenn episodes were a waste. That's why they won't change them.
You recently had a similar thread closed over in the General Pokémon Discussion. Several, actually.
If you have to wonder why, refer to the Forum rules, almost everything is set in stone there! as for why your threads keep being closed, it's because they go against forum rules. And, not to sound like a parrot of the mod who keeps closing your threads, but you seriously don't have to post a thread every single time something comes to your mind, because, chances are, it's already up on the forums somewhere!