Please add Units/increments within File>Document Setup...
So a user can easily change a document's units without changing the application preferences. The way it is now is confusing

Currently the book panel has an option to synchronize styles [paragraph and character] to the currently slected default file/chapter. However, it would be really useful to be able to only selectively synchronize specific styles instead of all styles. For instance, in my book with many fiels/chapters I have variations of styles based upon each individual chapter/fiel. However, certain styles such as the running head, the footer, page numbers I would like to be able to ensure that they are all the same without overwriting all the other styles tha t may have changed.

To create a tool that is possible to select all of text box of all document to change the idiom. Now, I need to select word by word using 3-clicks in the individual text box in individual page to change the idiom.

Create an absolutely empty document with settings and styles based on an open document.

Sometimes we need to create a document template based on a ready one. You need to keep all styles, master pages, color sets, etc. At the same time, the working pages should remain empty.

In the Paragraph Panel, hyphenation is selected as the default option, but we know that breaking words across lines lowers readability in text. Please keep it as an option for instances where it's needed, but don't make it the default. When changing it, it should also be universal to a document (in other words, you shouldn't have to click every text box to turn it off).

The requirement is to add different templates to a page / spread.
It should be possible to simply combine templates independent of each other. Not based on etc...
The names of templates could then be displayed one beneath another in page list preview. To apply several templates, we could select them at once and drug and drop to the page list preview.
For example – one template for page numbers, another template for logo. Combining different logos and different colors of page numbers will then dramatically reduce the required template quantity.

I prepare files for a team of 5 designers at my local university. In order for the designers to work on the project they need each page as a separate .indd file. As it would make my life easier and sounds like I don't want to do my job it would increase my workflow immensely.

Please add support for Grayscale profiles like in Photoshop. In InDesign, I can only define RGB and CMYK working space. In Photoshop, I can also define color space for grayscale files and files with spot colors.
Many books, magazines or newspapers are still printed using black ink only. Minimal support for grayscale workflow makes creating monochrome documents for different papers complicated as InDesign cannot convert grayscale profiles (ie. from Dot Gain 15% to Dot Gain 25%).

Sometimes my documents have pages that don't count as pages when it comes to page numbering but I can't set exceptions to Master Pages so that they are not included.

I can restart the numbering manually using exiting tools, but the numbers are rendered incorrect if any pages are moved. Having the ability to mark a Master Page as "don't include this page for numbering purposes" would be very useful.

You should be able to create a blank text box on a master and assign it a paragraph style. Then when you edit a document page based on that master, the text should be formatted according to the paragraph style. It does this already, for the creation of the page. But if you change the paragraph style of the master, there is apparently NO WAY for the new paragraph style to get applied to the document pages based on that master. Which is a huge oversight.

It would be very helpfull if we can group Layers or make Folders like in Photoshop.

I have to go into this panel multiple times a day to change this from 2 to 1.
It should be application level, because it all relates to how much I expect text to move when using keyboard shortcuts. Or at least let me toggle it or override.
I think this is like if my custom keyboard shortcuts were document level and I had to set them back up every time I got a file made by someone else.

More specifically, I need text entered into a previous form field prior to the visibility of other fields. For example, you cannot fill out a title field without completing a name box previously. Ideally, this could be an option under "event" on the "Buttons and Forms" menu.

This is valuable when creating a form where data needs to be input for followup form fields to become visible.

Load Master Page options should be same as Loading Paragraph/Character Styles, with options to choose which Master you want to load/overwrite. I have documents with multiple Masters, but I may just want to update one of them. In current state, I have to load all Masters from another document, which forces unwanted changes to the other Master Pages that did not require updating.

Smart guides are a really helpful feature but they currently do not work on the pasteboard area of a document. I frequently use the pasteboard to create design elements which I then move onto the page. This would be so much easier if we had the same guides functionality across the workspace. There doesn't seem to be any logical reason for smart guides to stop working once you move to the pasteboard.