I hear you on the random map generation. I ran a 70% water continents game with standard climate for the RBP9 succession game, and what do we get? Crammed onto a small jungle-full island with only the Zulus are neighbors. I ran an 80% water continents game for RBP6 and what do I get? Stuck on another small island with only the Indians as neighbors. (And the Mongols got stuck on an island with only room for 4 cities in that game.) I say "blah" to that.
If you want a good map, it's got to be hand-designed or at least touched up by a human mind. Along with Sirp, I'd also be willing to customize some maps if needed so that Sirian gets a chance to non-shadow for a change.