Personally, I want to play the heists with the same people that I've been playing GTA with for the past year and a bit. There were long periods when there was only ever around for of us on most nights.
That might not be fair to someone in the newbies, but it's what I've been looking forward to heists the most for.
We have 9 who want to play tomorrow, with only 8 slots. Issy has already said he can't play the following eve, so then maybe we'll have 8 slots.
Since my suggestion of having those who have played the longest is not apparently accepted, then you 8 play and I will try and join at a later time.