I assume most of you who are reading this blog are like me and have no interest in playing Tatsunoko Vs Capcom with the Wiimote or even the classic controller. If you're looking to import a joystick for the game, looks like according to the official CAPCOM blog one will be coming out before the end of the year.
Now as far as I know you can use GameCube converters to use your PS2 joysticks on your Wii but I have no idea how well these work. HORI also released some Wii joysticks but I also have no idea how hard those are to come by these days.
I'll update once these are available for pre-order.