Actually, last thing I heard was that they're scrapping the idea since too many were against it.
And even if it had been implemented, old invites would count too. The "base chance" that you start with would
not be lower than the chance we've always had in DC so no one would be downgraded in their chances of winning items.
The only ones treated "unfair" would be us antisocials and we who are too old to have any real life friends interested in gaia (you'd see the look of my fellow university students when I said I was playing with virtual dolls on my free time...)