Why would you want to do that? You will not get the cream for such work. From experience, you'll never get recognition for these things, you will never get paid more and most certainly they may dump more work at you.

Taking initiative and improving something never pays off to you.

Unless you are the type of person that looks out of the window at the company car park and sees board member in a branch new Lambo and then say to yourself proudly "I did that".