How do I get it to let heroes have more than 10 skill points?

They go to level 20 fine, but skill points seem to stop at 10, at least for pre-placed heroes. Actually I haven't tried leveling a hero legitimately to see if it gains above 10 that way.

You have to edit the game.dll file, see this thread

http://www.wc3campaigns.com/forums/s...light=game.dll