Microsoft is testing their new windows terminal which supports powershell, bash and cmd all in one. It also supports hardware acceleration for the display. Would be a nice alternative to putty/rebex.
I think that would be great! As far as I know, it's on their roadmap to provide an SDK with the control for 3rd party app developers at some point. Right now, it's a C++ (unmanaged) app which doesn't have a bridge or wrapper to get it into WinForms/WPF/UWP. As soon as this is available we will be happy to look into it.