CGI::Application is essentially CGI done with proper dispatch and slightly better abstraction but not all that clear to a beginner and easy to abuse and make a dog's breakfast. CGI would be the least complex here so it seems to be your real recommendation. No one should be recommending either today. It's like suggesting a hammer and box of nails over a nailgun. It might look a little less complicated but you are doing the seeker of advice a disservice. And I don't believe it is easier or necessarily less complicated than Mojo or Dancer. I think it takes a lack of familiarity with the packages to make your assertions. They were specifically designed to make web work easier. But maybe I'm wrong. Show us some code to demonstrate your point and I'll capitulate.

Come to think of it I can only remember one monk who recommended RPC:: stuff by route here. Always also without code or sense. But the handwaving show was worth the price of entry. Say... you haven't met that monk, have you? Likes to say things like, "all you have to do is design it perfectly and it's easy," "here's a tool from 20 years ago that will come in handy in case you are going to do something unrelated to your question," or "you asked for A but nothing you wrote particularly suggests you are asking for A."