Should Zenyatta have more mobility?

When it comes to pure character design, Zenyatta is my absolute favorite. I realize that he was part of the squad from the very beginning and that his kit may be outdated. Literally all other support heroes have the ability to pull themselves out of danger zones in one way or another. Blizzard describes him as a glass cannon and of course positioning is the key to his success. But as soon as a D.V.A. or a Winston locates him, it's almost certainly game over for him, unless he has his ult ready. If he dies, he has to float back to the fight very slowly. Often that's just not viable. Do you think he needs a cooldown for mobility or is his current skillset sufficient enough?