Quote - Dave,
I agree -at the moment there are not enough extra features in inf compared to complete to justify the extra money. However, things may change in the near or farther future.  I am not sure if it is of general interest but these are the feature I might want:

-Control procedural terrain altitudes based on relationships with other objects   
-The altitude of procedural terrains can be dynamically affected by other objects    
-User definable geometry anti-aliasing    Up to 1024 rays/pixel   (well, more than 64)
-Control materials based on the properties of other objects
-Animation features
-Change interface colors/size of text (so I can see easier)
-Ability to reorganize the view panes
-Python scripting
-Python console for direct input of Python commands
-Python functions to add, modify and remove EcoSystem instances
-Macro recording and playback to automate repetitive tasks

Some of these I would use right now(eg interface color), some I would use when I get more proficient (the procedural terrain and material control features), some I may want to use if I work a lot more with vue and need more efficiency (python, macro recording)

It is more a question of having options in the future than fixing something right now. Even if they claim inf is for pro's maybe I/others would like to turn pro? 
Also worrying, as was mentioned already, what will happen when v8 arrives ? will the gap in features grow? will it be possible to change tracks then?

( I would also like to know when skinvue for v7 complete?)

Yes, I can see the now the concern about the 2 products - Complete and Infinite drifting further apart in the future with respect to functionality.  Hopefully, this won't be the case.  Given E-on's track record, I'm not too worried about this.  On the Macro recording stuff for Infinite, you shouldn't be concerned about this as it is next to worthless for anything.  I've yet to to be able to get it to work and frankly, I don't see any case where this might be useful.  If anyone can show me an example of how Macro programming can be useful in Infinite, please share.  The Interface colors issue should be a part of the Artist line although I personally could care less what the colors of the UI are as long as they aren't some hideous florecent colors.