I've been through the Mach4 setup several times without too much issue. I know there are a lot of people out there that struggle with the settings of Mach3 and I found Mach4 to be more confusing than Mach3.
I'm wondering if it would be beneficial to have a menu item in Mach4 (or a separate APP) to import a Mach3 XML file to Mach4 do most of the config for you? This may encourage more people to make the switch to Mach4 and make Mach4 more friendly "out of the box".

Sage