How ARAM Clash could work.
I know Clash isn't even working for Summoners Rift yet, so ARAM Clash wouldn't be coming anytime soon. I just wanted to share something I came up with that could possibly make it work. The rule list would be as follows:
All Champions are unlocked. This would prevent ARAM accounts from taking over the mode.
When champ select starts, 15 champions are given out to each side (1 champ per player, the other 10 go to the bench area). It's basically like your team all used 2 rerolls. This would preserve some of the RNG needed for ARAM, but it also makes it so you're less screwed over by RNG and players have some say over what champions they're playing.
The slow self-destruct feature would not exist. ARAM never lasts that long anyway.