This is especially confusing with the sample loader if Devolution is located on the SD card while ISOs are located on a USB drive in the normal "Games" folder. You'd expect the .DVV files to either be in the "Apps" folder on the SD card or in the "Games" folder on the USB drive, but like you said it instead puts them in an "Apps" folder on the USB drive.Is it possible to create the varification files (.dvv) in the folder where the isos are located (means in the same directory like the iso)?
I use devolution via usbloader gx and wiiflow, and devolution is always creating an apps folder in the root of the USB device (which is in general not necessary, but must be placed for the .dvv). This is somehow confusing, especially for users who don't see any content in this folder.
The most confusing part is, if you already had an "Apps" folder on the USB drive but only for other homebrew stuff, you'd never think to look there. (I sure didn't!)
As I see it, the mouse controls were the first step toward being able to use a WiiMote.
The fact that code is in place to use something else as a GameCube controller means the next step is "just" to add all the code to communicate with the WiiMotes (slightly complicated as I understand it) and it should be able to be fairly simply added onto the existing code.
Does mouse control work well, like a PC shooter? I don't own Killer7 so I cannot test for myself. I just hope in the future that we could even use wiimote+nunchuck for the quality split-screen FPS games that the GameCube had but the Wii lacked (NightFire and TimeSplitters to name two). Same goes for sideways-wiimote steering in quality arcade-style racing games, which the Wii also mostly lacked (it had like, four? Mario Kart Wii, Excite Truck & Bots, TrackMania).