I can only speak for the WiiU version.
Blurry just on Wii U or PS4 & XBox as well?
You can create multiple accounts to access multiple eshops within region though (split by currency) so you can have a Euro and Sterling and Rouble account for example. There aren't many savings that you miss out on significant enough to have you pining for the Peso.
Afraid not. The Wii U is region locked
Badly scaled port, looks blurry, avoid if you are an arcade purist.