Point of flex?

For people who want 3 man or 5 man queues, as well as those who feel that teamwork is one of their strengths.

And y'know, the extra rewards for those reaching gold+ in both.

There's no point in any of the queues because both allow premades and there's no place to play solo-only games.

None, because the 21st of November 2016 is the day Flex Queue died.

Ooooor at least in a month when most people will reach Gold.