Description: Implements a level system in Mario, allowing you to unlock different abilities based on what your score is. It's kind of difficult to use but once you get the hang of it it's really not that hard
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Note: This has not been made easy since I can't figure out a good way to do that, ASM experience is recommended to use this, but nothing is stopping you from trying if you don't have any.
I was wondering if there was a patch like this, but there's too many issues with it now, not to mention being over 10 years old at this point... there's still a lot of potential with a level up system patch, though.