I have been pondering a replacement for my aging Roland A80 keyboard. The VAX77 MIDI Keyboard Controller from Infinite Response seems like a possible candidate:
This was the model with the heavier weighted keys (closer to a piano keyboard). It is one of the first I have seen since the A80 and the Ensoniq keyboards that has polyphonic aftertouch, as well as release velocity. I also liked how it folded down to have size and fit into a bag. It’s still a heavy keyboard, but it’s at least “schlepable”.
One caveat is the controller section, which is handled via the touch screen. I am interested in seeing touch-screen technologies grow in use, but there is a part of me that still wants physical knobs and sliders for my real-time controllers.