The ERAE II configurable contact surface controller from Embodme is in Kickstarter right now and they are promising MIDI 2.0 support. ( See Q&A Video at 23:20. )
This should present some interesting challenges / opportunities in design. Do you get to set up surface elements that get negotiated in as you plug devices in ? It also has a host port so you could plug another controller into it, also potential a MIDI 2.0 controller. How this all works together with other systems seems an up in the air proposition, and at the moment i expect this to still be being refined at the target release date in September of this year.
I posted about the ERAE II over here.