I could be wrong, but I suspect that a large portion of the motivation for Capcom to release ports of Gamecube games on the Wii is that Capcom is trying to recover the costs of upgrading their toolsets to take advantage of the Wii ...
The same engine was reported to be used on Resident Evil: Remake, Resident Evil 0, and Resident Evil 4. With how little support the Gamecube received from Capcom after the release of Resident Evil 4 it is likely that Capcom stopped working on this engine in 2004. It is plausable that Capcom is trying to improve this engine to truely take advantage of the Wii, and to be compatible with the same tools they're using with their Resident Evil 5 engine; being that they didn't anticipate the need for this, it is possible that they have a large team of developers (10+) working on this in order to accomplish their goals rapidly which can cost Capcom more than $1 Million per year.
