Seems like I'm late to the party but what the hell why not.
I would want a native port purely for the fact that the industry should start learning about Linux systems and stop being scared of them. I talked to a game dev on IRC about a week or two ago and they were scared that if they put their game in the linux pool they would have to make it open-aource or that the linux community would hack it and release the code.
I find it really stupid that this stigma exists. It's notlike we're different from BSD, OSX, or windows itself. We just aren't sneaky bastards.
If I had a native port I could watch it, see what it's doing, and report any sneakiness that I saw in it running on my machine. I can do that with all games in linux.
On top of that a native port runs 10X better than a wine wrapper in some cases. Unless the port is built specifically to work with the wrapper, most cases I have seen were just shitty scripts with the wrapper and the game didn't work anyways.
Native FTW