[Serious] Should Flash be a mandatory spell, like Recall?

Serious tag, no memes please.

This change wouldn't make it so we can't have two summoners or that one summoner is always Flash rather. Just that it gets it's own button and the other two are freed up.

The reason why I ask is simply this: If such a thing were to happen, would another summoner become 95%+ pick rate? Perpetuating the problem. There's no point in making the change if another dominates the selection.

The other thing about this is that; is it worth to force the choice and not let people have two summoners that aren't Flash but also simultaneously have Flash? Would having effectively 3 summoners be bad for the game?

My opinion is that won't happen and that this change would benefit the game as a whole. What is yours?