Why do Zelda Console games take 5 years to develop.... ?

[FarleyMcFirefly]

Reusing the same engine for a few games isn't a big deal. It would release Zelda titles more consistently, cost less, and that way if we don't like a particular zelda game (like Skyward Sword), we don't have to wait another 5 years to find out if we will like the next one.