Back in the day when I set type on a Compugraphic terminal (late 1980s), it had the most wonderful function....Vertical insert Space...that would add any remaining space in a given column at the spot where the VIS tag was inserted.
Best part, if you had a column with several sections of copy (even if each section had multiple paragraph breaks), you could use the VIS tag in multiple spots to distribute the excess space only where you wanted to and it would dynamically change as your sections of copy increased or decreased.
It worked much like a "shift-tab" does on a horizontal basis, except you could use it multiple times and it would distribute the excess psace equally.
I know I can Align Justify in my Vertical Justification settings, and set the Paragraph Spacing Limit to a large number, but if I have multiple paragraphs within each section of type in a column, I have to mess around with either space after/before or leadings to create equal spacings between sections of type.
This forum, unfortunately, is not the best place to post feature requests. You should post in the InDesign User Voice website. That site is read regularly by product managers and engineers, and users can vote for feaure requests which sometimes are adopted.
It's not so much a breach of etiquette, and a waste of your time! The product managers who make decisions about what new features to build don't have time to read through the mish-mash of content in the forums. Over there, they can get clearer information and see how many people really want feature requests.
I would do a new feature request and advertise it by posting the URL here.
Provide details by using screenshots. Also make clear that the feature should contain controls for text frame columns where the values can be set individually or invent a new, fresh view, maybe auto controls that work with the text itself.