At the time I am typing this message, multiplayer is still at 1st place with longer, harder in 2nd, side-scrolling 3rd and connectivity in dead last.
I choose longer and harder. Nothing like increasing the amount of skill and problem-solving required to beat a game to make you further believe that you
earned your wins. In the same way, I think mulitplayer is capable of that as well. However, one member reminded me of the strain a FPS and multi would put on the game in terms of quality. I have no objection to multiplayer because I relish the idea of someone always out there that can challenge you. I say let's see what a sequel can do for Metroid before jumping on the idea of side-scrolling. About connectivity, I can only wonder what ways the GBA can be used to enhance your gaming experience besides just as an item and enemy locater. There must still be some unforseen potential that hasn't been unlocked yet. I hope Retro and Nintendo will try and tap into it. I would like to have longer and harder challenges, mulitplayer action and increased use of connectivity but to rank them in order of what I want the most, I place longer and harder at the top of my wish list with connectivity in 2nd and multiplayer as a distant third.
That's my story and I'm sticking to it.