The term essay hooks is the introductory part of the essay that grabs the reader’s attention. It gives him a chance to decide and make up his mind whether to continue reading your work or not. The hooks for essays are actually the baits for readers. While writing any essay, one has to make sure that the topic you choose and the overall article must be appealing to the audience. This way one will be able to grab the attention of readers. It is an interesting sentence or phrase that captures the attention and glues the reader to your piece of writing.
You present a persuasive argument for the abandonment of the 5-paragraph essay and suggest a new format for presenting an argument... However, you did not provide much information on what is expected to go in between your introduction and conclusion? You suggested this format opens the essay to compare/contrast, cause/effect, analysis, etc... but how do you suggest students structure an essay with these approaches in practice? Any piece of writing needs some structure and main ideas that are then supported with various pieces of evidence (whether you are writing a historical thesis or a persuasive essay)... If you are abandoning a "main idea followed by supporting evidence" format, what do you propose should take its place? Or perhaps my understanding of the 5-paragraph essay you are speaking of is incorrect?