I own a ipod and always look for new apps. I think a free spiralknights app is just what the app store is looking for. Rpg games are my favorite and there are no good RPGs for the iPod. Every I judge how good a game is I compare it to spiral knights. I think a spiralknights app would be a great addition to my iPod. I have always wanted to play spiralknights on the go.
So all of you iPod people...
Are you with me.
It would be very difficult to port SK's mechanics to touch input. Also, since Java is not a supported language for iOS development, it would basically require recoding a new client from scratch.
I'd love to see a good MMORPG on iOS, but I think it would be better to write one from scratch to match the capabilities and limitations of the devices rather than try to port an existing experience poorly to the platform. A game with turn-based combat, for example, would be much more suitable, or possibly a rail-shooter mechanic (Rage on iOS works reasonably well).