Idea for Dynamic Queue (Not about SoloQ or Premades)

I like playing every role in league with top and support being my favorite two, but after Dynamic Queue came out I found myself playing only top and jg. I realized this was because every time I queued for top/supp I got supp, which wasn't necessarily a bad thing I just stopped queuing for support. Recently this got me thinking (it was during a 24min queue for top/jg which I changed to support for an instant queue) what if there was some incentive for people to play other roles in Dynamic Queue?

So here are my two quick ideas

1.            Back when I used to play WoW I recall there being a feature in dungeon finder where if there weren't enough healers or tanks queued, people who queued for those roles would get bonuses. I believe something like this could work as an incentive for the lack of supports in Dynamic Queue today.  For the rewards I was thinking small amounts of ip, possible around 50-75, or hextech blue/orange shards in a similar increment would be good rewards.
   

2. My other idea was to get players to play more roles in general, which probably isn't needed because we can just queue for different roles if we want to, was to get rewards to people who played, maybe 5 games in every role? A ip boost or some such reward, larger than one in the first idea.

Anyways just my thoughts!