Hyrel definitely needs to make a delta.
Fewer parts to go wrong, larger build volumes made cheaper.
Much more fun to watch and nobody has done one with lots of interchangeable heads yet. :-)

Couple on kickstarter with a laser head and one that seems to have vanished that also claimed to have a built in 3d scanner.
If I can find the software to convert a black and white image and produce the gcode to drive the laser, I'm pretty sure I can bolt the 1000mw laser from my tiny engraver onto the print head. Already got a power socket on the motherboard labelled: 'laser'.

It's worth a think anyway :-)