Double EXP weekends would be good. But it's just too hard, for every playlist they put in, they need different maps and gametypes to fit it, it's a lot of work for a small fan base.
As much as I would love to see double EXP back, I don't think it will ever happen.
They should try and have a double EXP week, as a once off thing, or just one double EXP every weekend at the start of the month.