So far I'm thinking the settings will be as follows. I'm happy to change things to suit players' tastes, so let me know. I've included the requests so far.
Hosted on PBW.
Turn duration: 48 hours or as soon as everyone has their turn in.
Proportions mod Version 1.5.
Quadrant:
Large Ancient Bi-Polar with all warp points connected, all player planets the same size.
Event frequency: medium
Max event severity: high
Tech cost: medium
All tech areas allowed.
Starting resources: Medium
Home Planet Value: Average
Number of homeworlds: 1
"Evenly" distributed
Player can only view own score
New player tech level: low
Racial points: 3000
No AI empires or neutrals
AI Difficulty high and computer bonus high, in case a rebel faction appears.
No set victory conditions
Max ships and units in space: 5000 each (pity we don't all have Gold 1.64 yet...

)
No cheat codes.
Gifts and tributes ok.
No technology gifts (send a gift ship if you need to).
Surrender not allowed (subjugation ok).
Intel projects ok.
Ruins will exist. Note that most of them will be red herrings.
No strict limits on colonization.
No saving map during game.
Simultaneous movement.