it would be really cool if he was playable. Maybe some smaller parts of the game could be played through, (as Luigi) via software updates on the wii, adding episodic Luigi content.

A real step forward in the series would be to allow 2player co-op during the story, one as Mario and one as Luigi. The Nintendo wii is built more as a family machine over the GC and Nintendo should add co-op play to enhance the gameplay for Mario Galaxy.

thats actually a really good idea. I wonder why Nintendo wouldnt do something like that.

One of the main reasons i can assume they would not add it is because Nintendo likes to spend very little on their games and have very small teams(about 40-50) making their games . While on the other hand Microsoft and Sony have teams that start out at about 100 and go up to 300 near some parts to get extra features in the game and pump them out faster.

The price of adding the extra content must equal sales for them and they may see no extra cash adding it to the game.  While bungie adding 4player CO-OP on XBL costed alot of man hours and added about no new sales to the series.  It seems that sales for Sony/Microsft are not the top priority, and would rather have a better game then a average game with no Co-op.

Thanks for the spoiler in the thread title.. no seriously.. thanks a lot... ARGH!

I like how they show you a picture of him like we don't know who Luigi is lol.

It woulb be better if they announce on-line co-op for Galaxy. No split screens, thank you.