Fluidity is available through Club Nintendo again until Aug 19th. Seems like a great time to do a Retroactive on the game, since some people could get it without any actual cash outlay.
Plus, it's a f***ing masterpiece.
There would, however, be two downsides to this being a Retroactive nominee.
The first downside, at least for me, would be that I find puzzle focused games such as Hydroadventure (Fluidity) to have low replayability (I know it's not a word). I collected absolutely everything in that game and feel like I would be gaining very little out of replaying it. I guess I could still contribute to the discussions though.
Secondly, wouldn't the conversation basically amount to 'that game is great'? You could talk about how the physics are great, how great the level designs are, how great the powers are etc. I defy anyone to argue that Hydroadventure was not a great game. The best retroactive episodes for me, however, tend to be about more divisive games.
I've said it before, and I'll say it again. Faxanadu or Ufouria would make for a great episode.