I have an idea to create a digital controller for the Metal Slug Anthology, and at the same time, also a decent light gun for light gun games. This plan would require sacrificing two each, Wii Remotes, Guncon2 for PS2s, and SNES controllers (for two players).
This is what I would do to the gun, first of all:

The Wii remote would be inside, with all of the button contacts soldered and connected to the respected GunCon 2 buttons. There would be a switch to change around the functions of the A and B buttons. Also, it would of course be wireless, with the expansion port where the cord used to be. I also want it to have the button contacts from the Wii remote connected to a second expansion port that would connect to:
this:

A Super NES controller shell, similar to the classic controller, except for the fact that it can only connect to the new WiiCon gun, since the buttons are all duplicates of the ones on the Wii remote. The reason for this is that I want a way to properly play Metal Gear Anthology with a digital controller. The only thing I'm not sure of, is can the act of shaking the Wii Remote to throw grenades in MS be assigned to a button in this manner? Is there a place on the remote that can be soldered to that this would work for?
The buttons listed first on the SNES controller are the Wii counterparts, followed by the arcade counterparts, or rather what buttons did those functions on the Metal Slug 6 arcade machine. Of course the Select and Start buttons would be the - and + buttons.
Of course this controller would also work nicely for any game that uses a horizontal Wii remote, NES, TG16, possibly Genesis (not the best button config for Genesis), Super Paper Mario (using the gun when you have to point to the screen), etc.
Would any of this be at all possible, particularly making flicking the Wii remote into a button?
Any ideas or suggestions?
I don't want to ruin more than 1 Wii-mote per player, so that's the main reason these two project ideas became one.