First something OT. I saw it in many threads and will just use this one to ask: What is a TSL game? Oo
And how I see my Civ partly depends on the map. If I have my own big isle I am a grumpy liitle isolationist. But most of the time it's an benevolent empire that has the mission to export its good values (my religion or my culture or my civs colors) to other cities of the world.
I see someone already answered your question but to be more specific I'd like for the full roster of Civs to cover the whole globe so that an Earth map game can be interesting. I'd also like a civ that covers common dead spots on a True Starting location game lIke Sub-Saharan Africa, Central Asia, The North pole, South America etc...