Once upon a time Microsoft used a tool called Microsoft Connect to get suggestions for product improvement. This has been removed and replaced by CRM Ideas at https://crmideas.dynamics.com/ideas/. The new location is specifically just for CRM with a ton more information regarding posting guidelines as well better search capabilities on existing suggestions. I think its worth saying that Microsoft definitely listens to the top voted ideas and it's a great way to get your voice heard on product direction and improvements for your customers. It’s worth a read if you haven’t checked it out.