um, not really worth it ...
It takes too long to load for what this gives. The game needs a few more items that help/give you some sort of short advantage, especially with that second enemy. What's more, no SFX OR BGM? You also need more space to play. Yes, it is a slightly bigger screen than usual flashes, but at times there's too many enemies out at once - either have the screen larger, or have fever enemies (not enemy types).