With the addition of Stagelink via SOundswitch, it seems like the next logical step would be to have Ableton Link connectivity. Imagine being able to sync up with not only midi hardware, but also your production software as well.
This would be amazing, I spent forever trying different work arounds to get the X1800 to send a midi start to my NI software for drum sequencing Techno sets. This would be a solution for many sync issues across the board.
I cannot comment on the X1800, but my current workaround for using the TR8s as tempo master is to run Maschine within Cubase and have Cubase receive midi clock from the TR8S