I don't get to play a lot, but I do look at maps a lot (and how AI civs interact with them) during autoplay testing. I strongly recommend Bobert13's Planet Simulator map. It's based on the older PerfectWorld3 and Tectonics map scripts (which are both great) with some improvements. The reason I liked both PerfectWorld3 and Tectonics were the realism of land formations and climate regions. Specifically, you have mountain/hill ranges, deserts, forests, unfeatured plains, etc., that take up some space on the map. This makes regions of the map look different. In base Civ5 maps, the terrains are much more mixed, leading to every part of the world looking much the same. (Note: Of course I'm not interested in "realism" per se. It's just that real world geography is interesting. I want a map script that captures that rather than erasing it.) IIRC, PerfectWorld3 typically generated more interesting land shapes (bays, peninsulas, etc.) but Tectonics had a better weather/climate/river system. I believe Planet Simulator combined the best of these two. What Planet Simulator does that neither did was add a good set of islands. So you don't have to pick Archipelago to have a good sea game. You can have a good land game and sea game all in the same map. The islands should really add a lot specifically for Éa. I know Civ5 has conditioned players to stop looking for city sites unless they can be super-mega cities. But Éa players should try to "un-conduction" themselves. You can have Tall core cities and still look at single-plot island cities for strategic reasons or just to pick up some resources. The AIs seem to be exploiting this aspect pretty well (though I'm not sure how well they compete with human player in this). Of course, the trade-off for "more interest" is somewhat less predictability and balance. But that seems like an easy choice to me. Anyway, that's my recommendation. I'm sure players have their favorites.