I was just out fishing; thinking of how boring it was sometimes.
I happened to remember playing Zelda on the nintendo 64 somewhere around 15 years ago and how REALLY FUN the fishing was.
Here's a (crappy) video of someone fishing: http://www.youtube.com/watch?v=bV7tgYQQzGM
If you don't feel comfortable clicking the link, just search youtube for "Legend of zelda, Ocarina of time, 35 pounds fishing"
Basically, you'd press and hold a button to cast, and release it when you wanted the lure to fall.
You'd then zoom in on the lure and be able to reel it in as slow or quick as you wanted.
The lakes were filled with randomly generated fish of different sizes and difficulty.
If you dragged your lure by one, he might grab a hold.
You'd have to set the hook and fight him without breaking the line and reel him in.
I thought it was very entertaining. Do I think Blizzard will do anything like this... no. But thought I'd share it anyway!