Leona is an ADC's Worst Nightmare

I really think her ult cooldown needs to be changed, 90 seconds is less than the amount of time between fights so if you survive the first time, it's up before you would consider backing to refresh and buy items. Her Q gets bonus range, bonus damage /and/ stuns, her E is a dash to target root, hell even her shield does damage if you're close enough. On top of her heavy CC kit, her ult is easy to land, stuns/slows for 1.5 seconds, and gives her next basic attack 225 range. is it at all possible to increase the cooldown of her ult so it makes laning less of a nightmare after level 6?

Btw if you don't agree and can't be civil about it please do not comment negatively on this post it's getting real annoying.