A much requested item is a rich text editor in Dynamics CRM. You can already find some RTE experiments via CCF on the web.

Ideally, we would have a RTE that stores data as richt text (html) but also as plain text. This way, the info can be used to show in views and can be used in Excel exports or reports as well.

The tooltip control accepts HTML content as input and renders it safely within the tooltip popup, supporting rich formatting like headings, lists, links, and images. and adding the ability to redirect to a provided link on click of the tooltip icon. custom icon change option.

There is an "Add Picture" control in Canvas Apps which allows the user to select pictures from mobile's photo gallery. The need is to be able to have an "Add Video" control to allow the user to select the video directly from the mobile's phot/video gallery. Currently, the pain point is that if we have to upload a video, we have to do it as if attaching a file. Hence the video has to be selected from the phone's file explorer which makes it hard to find the video.

Develop a custom image carousel component to showcase a collection of images with navigation controls for a visually engaging user experience.

It's good idea to do an PCF to get the e-sign from customer on agreement or contract, PCF contain some fields and file uploader, from CRM I click on button send pdf request a sign, customer receive an email from system asked him to sign the pdf, once pdf signed , a copy should send back to CRM, same scenario of adobe sign

Display options as radio/switch buttons for MultiSelct Option Set in Dynamics 365

Handling Queue Items is quite frustrating and requires a lot of clicks - an easy way to move Queue Items from Queue to Work or another Queue would be helpful. Maybe like a kanban board. 

There is already a multi-select-control for n:m-relations, but none for a "connection". The benefit would be to be able to add connections in the quick-create dialog (which does not support grids)

It would be great to convert a grid view of records with child and parent relationships to a folder view.

I saw PCF for the note attachment but a good idea could be the same for email attachment files.