Not a good idea IMO. You'll have the US citizens throwing a fit over it being held in the UK and vice versa. So I would suggest no conference unless fans put them on with special appearances from developers or mods.
Don't think those that live in the UK who would be expected to appear at the US one would be too energetic to travel for 2 conferences but that is my view, I could be wrong.
Don't think those that live in the UK who would be expected to appear at the US one would be too energetic to travel for 2 conferences but that is my view, I could be wrong.