I'm curious to hear other's thoughts on they think would be useful.
Please don't hold back ideas! There's very little harm positing silly or unlikely ideas, but there is some potential value (perhaps more than you realize).
Inspired in part by calebo's comment here
To add a bit here; I think there are a bunch of small projects coming up (like all those funded by the Long-Term Fund. They could probably use several kinds of infrastructure. An incubator could be nice, but there could also be other kinds of services provided without quite that specific setup.