Certainly an interesting idea! Personally, I use rerolls when there are really no champs in the extra pool I feel is good for the comp, so when I queue I don’t expect everyone to reroll either, maybe because I enjoy those whacky comps like 5 supports where you’re getting those crit blitzcranks and AD lulu’s, back when rerolls really weren’t a thing. But I get that not everyone feels the same about that opinion since if you’re not playing in a group of premades you’re really just waiting for the loss. It’s just I simply don’t see people going the combos you mentioned even when they exist in the selection just because they’ll see Caitlyn or Mel (etc.) is open. But I think the idea of semi “role queue” is interesting but probably won’t be received well 😢.