It's interesting that you can rocket through the DizzyAGE version of Treasure Island so quickly. In Clover you can't die, and it's amazing the difference that makes. The original XBLIG version had roughly the same number of puzzles and items as Magicland Dizzy, and a larger map.
On average it took people about <6 hours to complete, which is far, far quicker than it took me to complete Magicland, that's for sure! I think if there ever was a remake of Dizzy, it'd have to have many, many more puzzles than the originals. Just hopefully not split up into levels like Crystal Kingdom :/