Rental Property Bang for Your Buck Features

What is everyone doing in their rental rehabs today to get more for their money in the long run? And more consistency - which would ultimately save money over time as well.  I've read about using ceramic tile, refinished wood floors, same colors of paint on ALL rentals to provide consistency. 

Any other cool tips to provide? 

My goal is to eventually have every rental unit containing the same similar characteristics/methods as the others.