Ranked Queue needs a change

The new ranked queue needs some help. If you select support as your secondary role you're pretty much stuck with it every time. I played last season and got to plat 5 by rotating between jg and support and it was great, but with the new system I'm only getting support.

There should be some system in place that you're guaranteed your primary choice every 3rd game or every 4th game. It's dumb I'd have to queue up a position I don't want just so I have a better chance of getting jg.