Would be nice to have the "Mobile Remote Control and Remote Support" client also for Windows Phone users (not just for Android and iOS).
May be that the best choice would be to develop an Universal App (https://msdn.microsoft.com/en-us/library/windows/apps/dn726767.aspx) ready to run on all Windows 10 devices
Windows 10 Mobile will be more present in company environments, even for technicians that will give support.