Hi Tom, well like I wrote above probably MatchSrf is the biggest missing one. There are other techniques you can use though.

Building a patchwork of surfaces instead of using solids is a much more difficult and advanced type of NURBS use, which is why it isn't a big focus area for MoI currently. The place where NURBS really shines and is easy to use is for constructing objects from 2D profile curves and using booleans. MoI is currently more focused on that area where NURBS delivers the biggest benefits in comparison to sub-d modeling.

Modeling organic forms that are not easily expressed just by 2D profile curves tends to be an area that works better in sub-d modeling.

- Michael