Here's one pro and one con from the article: "Most games support a 'suspend' feature that allows you to exit out of a game in progress and resume from where you were. It's like having a save state, and for those old NES games that required passwords it's a real boon ... [But] Games played on widescreen TVs automatically stretch to fit, which looks pretty bad. Link was always a tubby little guy on NES, but this is ridiculous."
To overcome the latter, you'll have to manually switch your Wii screen size to 4:3. Bummer.
UPDATE: Fixed dyslexic 3:4 ratio.