You can activate "Set Workbench To Prompt Before Running Workspace" (the green question mark) which asks the user to enter or check the parameters of the workspace. If you want, you can then run tests on these parameters and if you are unhappy with the user input you can send them to a Terminator, maybe after first using an Emailer to point out their erroneous ways. :)
Hi @deanhowell,
You might want to have a look at the FME Quick Translator after you created the workspace that by default prompts the user to enter published parameters.
This application is much more user friendly for non FME users to run and an added bonus is that the user cannot 'mess' with the workspace.
Hope this helps,
Itay