The place to make suggestions depends on the specific product. There seems to be a UserVoice site for each major product category, but I cannot find a home UserVoice page to direct you to. For example, for Windows Server you would go here:
https://windowsserver.uservoice.com/forums/295047-general-feedback
where you would select a product or category, Active Directory or Management Tools. For the OneDrive product you would start here:
https://onedrive.uservoice.com/forums/262982-onedrive
Each product or category seems to have its own UserVoice forum. You can make suggestions, search for similar posts, vote on suggestions you agree with, and add comments. Microsoft people monitor these posts and often reply.
But this particular forum is for questions and discussions about the TechNet Wiki. I will move this question to a forum where others may have more suggestions. But I suggest you reply with details about the products where you have ideas.
Richard Mueller - MVP Enterprise Mobility (Identity and Access)
