It's great this game finally came out! It's a shame it couldn't be released back in 2002 on the GBA like it originally was supposed to be. But at least it's out now, I'm sure the physical GBA releases are hard to come by now though since it's a Limited Run game. At least the digital versions exist for modern platforms though too.
I am glad that it finally made its way to the light. It's quite interesting when long forgotten projects are reawaken. Shantae Advance: Risky Revolution is a typical example.