additonal web part functionality
Introduce Accordions & Tabs (In-page) web parts | More Table Functionality
Accordions help users see only the content they need. Accordions expand and collapse sections of content with a title.
Horizontal & Vertical Tabs (In-page)
Tabs are perfect for single page web applications, or for web pages capable of displaying different subjects.
Tables are very limited. You can't even merge a cell? Enough said.
Dan P commented
Please stop denigrating functionality without serious consideration to users. We depend heavily on things lick Java Scripts to organize content on pages, and without a similar function cannot have Classic pages go away until you provide similar features in modern pages.
Areon Jackson commented
We need this. Past SP environments allowed us to leverage SPELL tabs. This functionality improved productivity and minimized the need to scroll. I am rather surprised this was not incorporated already as SPELL tabs, and Easy Tabs before that, were such popular add-ins.
Totally agree with this, particularly the accordions - i'm trying to replicate an existing site, not because I don't like change, but because there is no other way to present the information in a clear and concise way. Plus I know that the use of accordions works for our staff.
I can also see a use for the tabs suggestion on another site that will be due for migration soon, so both features would be fantastic to have.