Just an idea I had recently. Could an option be added to automatically add your re-rolled champion in ARAM to the champion pool at the top instead of keeping the new one? It's a fairly rare occurrence for me, but it would be nice to have. I have enough champs to re-roll every game, so it'd be nice to put some more up there for everyone else.
Personally I just reroll and immediately click the champion that I used to have. There's no cooldown on changing champions when you reroll, only when you select one from the pool.
It's not perfect, but it works. Even on a potato PC I've never lost my preferred champion to someone else doing it this way.
It'd be nifty to have a 'Add Reroll to Team Pool" option, but it's not particularly necessary enough to ever see it as any form of priority for Riot.
Honestly sounds like a redundant mechanic, since you can simply trade back to the one you rerolled if you don't actually want the new one.
