As always with these things Jaycee you have to try and keep everyone happy. If the majority of folks are coming from the south or south west then it will have to be somewhere with 'weighting' towards that area. I'm happy to go anywhere really being as I'm pretty much on the line between the northern and southern half mil (all three of the airfields I fly from are on both maps).
Could also have a 'northern' fly in as well, plenty of us lurking around in Yorkshire and that sort of area.