DVD Playback is not a necessity anymore because enough people own DVD Players anyways, so whats the point on wasting more money for a feature thats not really needed. Ninty could release a special N5 that includes DVD Playback like they did this gen., but 5 to 1 says it sells horrible if Ninty somehow does this because of said reason a few lines above.
But I'm hoping Nintendo includes a built in HD and a LAN/Ethernet Port. No need for dial up since its hard enough this gen to incorporate dial up players into an online game. Nintendo should include an online setup at the launch to at least keep in competition with the other companies.
Built in wireless ports MUST be there. If Nintendo can make it so the wireless controllers are able to be recharged and not need AA batteries, that would be the greatest thing Ninty could do for me.
Other then that, I'll reply here and there as people add new features that could be included and I'll give my input
