Yes it is good to dream big as you can but if you keep just dreaming, and do nothing about it, it is become bad or useless because dreaming is breaking limitation of current state of your mind, that why is good to dream, and better to write it down and wonderful to start thinking what the recent dream was all about.
The bigger practice of writing your dream down and start thinking what is all about, you will move from usually dream at night, to a day dreamer which, I do not see a difference with what is called innovation, it is just a day dreaming with big note of possibilities and feasibilities.