Does anyone have a good collection of preset maps?

You can always use the Balanced Map Tool to make as many as you want: https://ti4-map-generator.derekpeterson.ca/

Interesting. Every single game I've ever played, including the first and only 6 player with 6 n00bs, we've always built the map.

Always dealt out the tiles evenly, removed any as needed, put Mecatol Rex in the centre measured out to where the home systems will end up for reference then spiralled out from the Centre tile ABCDDCBAABCDDCBA style.

And if you place the supernova in the 1st or 2nd ring, you're a bad person really.