Thanks for taking the time to review my extension I'm very flattered you think all admins should use it for the reasons you mentioned. I'm also glad you found it easy to setup and use.
pros: easy to install & use.
Cons: once you create questions, you cannot edit them. Also The screen shot of the Settings listed in the Demo page are different than the actual Plugin pages. (e.g. you may not find Settings button).
Full Documentation must be included. i had to search for it on google.
I still waiting for a refund.