That's a great idea, Jose. I think I've worked on something similar in the past (a looong time ago!). I do have a couple questions for you:
Are you looking for something you can use in Aras Innovator 11 or 12? Due to the UX/UI enhancements in Innovator 12, I don't think there's a single solution that would work for both. However, maybe we could put together a project that's a collection of samples.
What events do you need to trigger the collapse/minimize/maximize? Ex: form events (when form loads), field events (a certain field is edited or a classification picked), custom events (user clicks an element in a custom HTML field)