RDP has included the ability to forward individual windows. RDP also includes a lot of capabilities that (as far as I can tell) X11 doesn't like bidirectional

RDP has included the ability to forward individual windows. RDP also includes a lot of capabilities that (as far as I can tell) X11 doesn't like bidirectional audio redirection, redirection of local hard drivers, printers, etc. Frankly, the user experience for remote desktop and remote application access with more recent versions of RDP (in Win2008, etc) is vastly superior to what's currently available for remote desktop and/or application access in Linux. Now admittedly, I don't know of an RDP server for Wayland that implements those features (or any RDP server for Wayland really). But given that Wayland is still fairly young that's not surprising. There's certainly no compelling reason why a good RDP server can't be written for Wayland.