Poked by your comment I did some more of searching and came up with quadrify tool from the graphite set. It helps in some areas. I've tested some scripts from scriptspot before. They give mixed results. All depends on the complexity of the source model. Thanks for your input.
There are methods to automatically de-triangulate models in 3ds Max. On my phone so can't easily check. Check the help file, and search Scriptspot. Once it's mostly quads then you can use loop selections in Unwrap.