Yeah, button mapping is planned. I'm not entirely sure how to implement filters on the Wii, but I would like to implement that too. Take a look at the Upcoming Tasks List to see what I'm planning to do.
E] The biggest blocker for savestates on Wii is that PowerPC processor arranges things differently than on Intel or ARM processors, so I'm going to need to make sure I fix the arrangement of all of those on the Wii.
E] The biggest blocker for savestates on Wii is that PowerPC processor arranges things differently than on Intel or ARM processors, so I'm going to need to make sure I fix the arrangement of all of those on the Wii.