I don't know if this any of this is planned, but:

1. How about nested resources?

resources :magazines do
  resources :ads
end

2. How about ability to add custom methods to resourceful controllers:

resources :photos do
  member do
    get 'preview'
  end
end

I've quoted rails here. Hope that's okay. I'm sorry if these features are already here - I just didn't find them in the code or docs. I'd be happy to help with implementation.