shroud "unique" to akali, now Senna has the same thing

When akali was reworked, riot kept the shroud because it was unique and special to her. The ability had true stealth, until it was complained and complained about then it got removed. Now, a new champ, Senna, has an ability identical to shroud. Except, her shroud grants TRUE stealth to her, and anyone on her team that stands in it. So the "unique"ness of Akali's shroud is no longer unique to her, and the true stealth that was meant for her is now on another champ, but grants it for multiple people.

I don't know how that is fair or reasonable. Taking an ability from one champ, nerfing it heavily, then giving it to another champ but make it 10x better.

If Senna can have a version of true stealth shroud thats better than akalis old shroud, why can't akali have hers back?

If akali's SELF true stealth was cried about, I can't imagine the feed back that senna's multiple ally true stealth will get. Why create a a version of an ability that had so so much negative feedback, make it 10x better, and give it to a different champ!? Truly appalling to me.