No QA Steve I will not insert a massive feature into the project no matter how high of an importance you deem it or how awesome you think it is.

One QA ask me one day to develop a feature to help him test the app. How about... NO.

I don't mind little things that aren't directly related to the projects improvement, like adding an argument to the URL to enable them to see the fps but an entire massive feature is a no no. The QA in this case wasn't even part of our company it was a vendor that makes our engines.