1) It can't be for Xbox. The majority Dreamcast fans are definitely not Xbox fans, as we saw with the abysmal Shenmue II sales for Xbox. It infuriated me that Shenmue II was only on Xbox back then.
2) If you want to cut major costs and easily make a profit, make the game on the Wii. That way you can improve visuals and load times over the Dreamcast versions, while still copying over a lot of assets. Even if the game sold a measly 250k I could see it profiting if they used the Wii.
3) If they want a great looking game and potential for the most success, make it on the Playstation 3. Sony owners have a wide variety of gaming tastes, and would probably be more accepting than both the 360 and Wii audience. However, this would also increase risk of financial losses.
Currently playing: Uncharted: Drake's Fortune, NBA2k11, Metal Gear Solid, Picross 3d