Well the enemy comp was a mistake, I forgot that was blinds. But still, statement holds true if one doesn't like their own comp. they just take their God pick and try for a new one.
And the difference between randoming the same champion twice in a row and it being assigned once with certainty is the random portion of it, I'm not sure how you're not grasping the concept here. If I random Rammus, that was a 1/136 chance or whatever the max number of champs is. Player X and y each have 1/136 chance to roll each champion. If X dodges and has this certain assignment, that means player Y only has a 1/135 pool and not a 1/136 next game, or whoever the new player Y is. Statistically small difference? Yes. Unfair that he can't random a certain champion when he's supposed to be able to? It's different than just the regular formula because while the yes it counts down 1/136, 1/135, there's no certainty in any of those players getting a single champion.
Here's why I mean in other terms. I dodge as Ziggs. Next game, it's impossible for 9 other players to get Ziggs. Physically impossible. It's not the same as entering the lobby and randoming Ziggs first, and then everyone else gets their random too. It takes the random out of Aram for one player and eliminates an entire possibility for 9 other players In a lobby to even chance that champion simply because you're in their game. You had a 1/1 chance to get Ziggs, everyone else had a 0/136 chance to get Ziggs just because you were in the lobby. See the ratio problem here? Yes, initially this seems like a punishment for bad rolls. But it is just as easily abused by saving good rolls for better teams. It also, even if a bad roll, locks an entire game from ever having the chance of acquiring that champion, whether it's a good one or not.
I'm not saying it's a huge difference, but it's still a difference and it is taking from players, unknowingly by the way, the true random just to punish one. Essentially everyone is receiving a penalty.