Conegamer on 24 May 2012
I'm not sure what online multiplayer would get you...
Just make the games longer with more levels and new worlds (e.g. a gravity world like the sections in Galaxy 2 would be nice!). Also, an ability to change the difficulty. And put in more new power-ups. As much as I hate to say it, a gun or a rocket launcher or something to destroy projectiles, or something like the Gravity Gun in Half Life would be nice.
Aside from that, just improve graphics and take advantage of the hardware.
