I think that line up is quite good. Look, the Dreamcast has many great games on it, why not just buy one, already?
Also these products are by other companies, and have nothing to do with SEGA. Like that other game system, a person, simply can't just tell somebody get off their behinds, and sell their rights to SEGA, so a game could be published on another system. Like, lets all be like "Robo-Cho" and fly around and tell them to re-release their game for the current gen, which many people already are not so proud of.
If so, we would have the same problem with "Chrono Trigger" when it was port. So far the game has had two bad ports. One with some added animation sequences, and another with an mystery dungeon, and lame boss battle. Neither of them really captures the games. Their are even fan-makes of the game flying around.
Do I think it would be nice, if a Dreamcast Channel, was out? Well, again, who collects the profits?
Again, what about preservation?
Multiplayer? The only real multiplayer system is called Kalleria, and thanks to anti-privacy bastards, making the internet, into a looney-wives den, what do you think?
Which Sega games could be available? What SEGA has control over. Like take Castlevania X. Hudson and Konami was responsible for that game. So they had problems with porting it, to the Playstation. Like the game source code itself. Thus Symphony of the Night was born.
About non SEGA games? Again, why should we wake the dead? Why rob people of their greatness?
Why should SEGA result to digging for gold, in something that is their pride. Why not just make a new game, in fact that starts a new idea of it's own.