>that basically leads me more towards focusing on more professional level users who can more easily afford anything in the $500 range if it helps them get their work done.

Increasing the price sounds reasonable to Me as MoI grows to a Professional app. Lets say MoI reaches the $500 or even $1000 price point at V3 or V4, WHAT are the features you plan to add?
For example will you add features like Product Documentation, Industries Standard formats like RealDwg, will you create partnerships with CAM Software...These are important features IMO to have in terns of getting the work done.

Thanks in advance.