One of the things I try to evangelize about is to slim the system down, not "dumb it down" but make it slim, and efficient to what you are trying to do. Hence not include a lot of unnecessary stuff. The AppDesigner is excellent for this, it creates subsets of Dynamics 365 (not operations/financials) into what are called apps. With their own sitemaps, view sets, form sets, business process flow sets, chart sets.
I made another film about this, on how to enable and get going with it. Why not watch it?
MVP, Founder and CTO at CRM-konsulterna AB