You should be immune to CC during the first second in URF battles
Just played a game against Veigar which showed one of the reasons why his winrate is so high. He placed his stuns on everyone that respawned which is super easy because the opponent gets to see where you spawn 2 seconds in advance. There should be some kind of fall back mechanism so that the team that loses one life first doesn't automatically lose the other 2 right after.
Maybe make it a 0.25 second shield and give you a mini dash as soon as you spawn so that you don't get insta bursted by "skill" shots.