I can't see any benefit or reason for this change.

Some people have said they don't enjoy 24 man, but the only reason 24 man pops is because not enough people join in a certain timeframe.
I can only imagine that this will make it near impossible to frontline PVP outside of peak hours, so good luck to those with odd working hours.

The only thing the new map has going for it is that it's frontline and not rival wing, so it will see some play through the roulette. If not for that, it would be as dead as rival wings in a few weeks after launch.