should I roll out this FSX app as freeware?

I am working on an Excel spreadsheet that allows you to easily generate the keyboard commands via the appropriate XML strings for the about 1000 commands the sim has.So basically an alternative to FSUIPC for keyboard commands that works directly with the controls XML file. This project is to allow me to configure my home cockpit. But I'm willing to polish it and put some instructions and post it on my website if people are interested in having this tool.