SteveU, your input is welcome, but you've got 900 more posts to read. There is no summary. All of the design criteria have been well thought out. They may not be like Tesla would do it... but we're talking about building a car for 105,000 dollars cheaper. That's like 9 houses in Detroit.
One of our criteria was modularity. If you don't like the drive electronics... make your own and use the logic portion of the design. If you don't like AT8's, make your own logic portion and use the power board. Don't like either, go make your own controller... we'll help