Join me in calculating the theoretical end of all ARAM/ARURF accounts [Patch 7.16]
Patch 7.16 > The Free to Play Champion rotation will always be 10% of the current champion roster. Today, that means 14 champions, up from the longstanding 10.
A recent surge in the number of dodges I encounter in a row made me think about this
~ = approximately
Before this patch I had a ~5% chance to get my absolute favorite champion in randoms Before this patch I had a ~15% chance to get any of my top 3 champs Before this patch I had a ~35% chance to get my absolute favorite role
After this patch I have a ~3% chance to get my absolute favorite champion in randoms After this patch I have a ~9% chance to get any of my top 3 champs After this patch I have a ~30% chance to get my absolute favorite role
Since Kalista was released they have made around 15 additional champs, the only champ out of that 15 I liked for my fav role was Xayah (1/15).
Every ~10 champs they release they will increase the free rotation by 1 (currently rounds up to 14 out of 138 total).
Currently there are only 6 other champs within my fav role that I can use to restore old %.
However I simply hate to play some of them (ezreal), or find them far too powerful in aram, or too powerful in general.

Therefore now, and in the future, It will be much less likely for anyone to get their favorite things. Which is okay I guess. Slightly less fun but ok.
To compensate I can pick up all the busted champs in aram that I was intentionally avoiding, or even go on-hit bard!
However eventually the % for these will drop as they continue to crank out champs I may not enjoy as much. Not saying they are "bad", just less enjoyable.
So eventually, with inevitable champ releases, I will hit a point of the % giving me things I find "meh" or boring more often than not.
There are quite a few champs I hate to play (Nasus/Zed/Riven/Yasuo/Yi/Lb/etc) and some actually put me to sleep (Sejuani/Garen/Janna/Soraka/Nunu).
A support main, for example, may find their pickings of things similar to Rakan/Bard extremely slim and the % chance becoming like winning the lottery.
I'm not sure what they could do, or even if they should do anything about the inevitable end of all ARAM/ARURF accounts.
Limit free champs in randoms? Require you to own a certain amount? Set the rotation to a total 12 instead?
Ultimately meaning: People that mainly like ARAM/ARURF may find the game less fun and look for something else to play and waste money on.