In this latest post to his site Freek Lijten talks about "the itch" of having or working on something outside the normal project standards.

I assume everybody has certain rules, regulations, guidelines or conventions at their jobs/open source projects. I like structure and consistency so, as long as they are sensible, these things make me happy. Still, every once in a while, something itches. What wins, itch or convention?

He gives an example from some of his current work with an "itch" around using only a call to a registry to save information where business logic isn't needed. He recommends not scratching the itch though, as consistency should win out over other solutions. As he points out, "one day, you will have the need for business logic" and you want to have that structure there to fit it into.