If you open a run test case step, then you see a table of their properties (in name column) and values. I understand you don't want us to edit those property names. But, please allow us to at least copy the property names from that table itself. Unfortunately, the UI layer of ReadyAPI is annoying here besides other places.
Here you can review submitted feature requests and vote up the ones you like! If you can't find the feature you want - go ahead and suggest your own idea. Ideas with the highest rating can be implemented in the product.