Both these ideas sound pretty ambitious. I'm not a mapmaker myself (yet ;) ), but what I gather from talking to people who are and reading the forum, it's surprisingly much work. So, maybe you should start with something simple, just to get the hang of it. Then when you have a little experience, you can make bigger, more complex maps.
I really like your idea for a polar map though. It's quite different from the maps already here and sounds very interesting!
Thanks to [Matma Rex](http://warlight.net/Profile.aspx?p=421306692
), one of the mapmakers, part of the [process ([choosing centre points](http://warlight.net/Forum/Thread.aspx?ThreadID=2452
) and [making connections](http://warlight.net/Forum/Thread.aspx?ThreadID=2668
)) can be done mostly-automatically.