No More Heroes and Muramasa: The Demon Blade would be likely candidates to receive port treatment.
In a financial presentation, Marvelous Entertainment has announced that they are planning on bringing some of their Wii titles to the PlayStation 3 and the Xbox 360 as part of their efforts to broaden their console support.
Some of the Wii Marvelous games include Little King's Story, Arc Rise Fantasia, Muramasa: The Demon Blade and No More Heroes. They did not comment on which games would be ported, but games that don't rely heavily on the Wii controls would probably be likely candidates.
In the case of No More Heroes, the title was originally going to be an Xbox 360 title until Suda 51 expressed interest in the Wii Remote and updated the game to have motion controls. However, Suda 51 expressed that while he wishes to continue the No More Heroes franchise beyond its upcoming sequel, No More Heroes 2: Desperate Struggle, he says that it won't be on the Wii, stating that "we've done everything we can with it for now."
The low sales of these titles could have also inspired Marvelous' decision to support all consoles.