It's a convention that encourages people to organize kaminari templates all in one place and separate them from others. I can imagine some people want to use `app/cells/kaminari/...` or `app/views/deprecated/kaminari/...`, but  allowing to use any paths like `app/views/_page.html.erb` or `app/cells/_page.html.erb` doens't sound good.

I don't add any features until I hear _"I want to do this on production"_ opinion several times otherwise you'll end up adding a lot of _"it would be nice"_ features.