I don't get the frequent bashing this game. Sure, there are no objectives to speak of or any fantastical creations (like RPGs), but I find the exploration part the most enticing aspect of Endless Ocean. For me, games are a way to escape and for this game to allow you to explore a vast, open body of water convinced me to just give it a go. It also explains why I've preferred the slow, "take-in-the-surroundings" elements of Metroid Prime compared to the faster-paced Halo series (or any other FPS).
Although I do get your point, Kilroy and Elixir: pointless swimming around and looking after sea creatures doesn't look too swell on text. In any case, I'm getting it as soon as it comes... oh wait, it's out here already
Jam it back in, in the dark.