I am excited to present you my old collection of levels
It's not really a hack on its own since you can roam around the overworld without completing the levels. It's just a side-project I've compiled in 2015 when I came to the realisation I did not have a complete rom-hack concept. Some of the levels are overly easy, some others have booby traps. There are around 23 exits, I believe.
Since I've provided a forum link, you can already find K.T.B's opinion on this rom-hack to find out if it's worth it for you or not. It's stated in his first post.
Thank you. Hope it will make it to your channel, it would be fun.