Singlehandly introduced many people to Kirby by being the most generic braindead entry imaginable. Thanks >:/ Fanservice is cool but this is like adding frosting to a cake they forgot to put in the oven.
Releasing a weird spin off game on a dying system is a sure fire way to make it forgotten. It's indeed pretty forgettable but in retrospect I can't help but feel bad for it and enjoy it out of pity.
Gets worse every playthrough as the Hypernova loses it's wow factor, and bosses are too happy to just stay in the background (looking at you Pyribbit), but it's another really solid game with very sweet and colorful visuals and cool new abilities.