I see a lot of strange takes around here, and honestly cannot understand where you are coming from. Like really: I’ve written several 100+ page documents with everything from basic tables, figures and equations, to various custom-formatted environments and programmatically generated sections, and I’ve never encountered even a third of these formatting issues people are talking about.
You literally just \documentclass[whatever]{my doc type}, \usepackage{stuff} and fire away. To be honest, I’ve seen some absolutely horrifying preambles and unnecessary style sheets, and feel the need to ask: How are you people making latex so hard?