What if instead of nerfing flash...
We gave the other summoner spells constant passives?
For example:
Clarity: passively grants 10% Cooldown and 100% base mana regen.
Heal: 50% base health regen and increases healing from all sources by 10%
Barrier: Reduces incoming damage by 10%
Ignite: Increases damage dealt by 10%
Ect.
I would think this would give other options to summoner spells, as you could take something else than flash simply because the other spell provides something more useful. Thoughts?