[{quoted}](name=I Main Swain,realm=NA,application-id=3ErqAdtq,discussion-id=1BXyx2On,comment-id=0003000100000001,timestamp=2017-07-21T19:28:53.662+0000)
it really depends on what riot wants to focus on with her, there are really a lot of ways they could weaken her to make her more balanced. increased mana cost on q slightly early game, decrease damage on q slightly, lower shield value/removed bonus stats. whatever they do though, i dont think she needs to have any bonus on her shield, its plenty strong as an ability without it. a part of me wonders how it would work out if they turned it into a single spell shield rather than a damage shield
Keep in mind, her shield is nothing out of the ordinary, considering your typical supports have bonus functions on their shields.
Janna has +AD, Morgana blocks all CC, Sona heals, Karma boosts MS, etc etc.
As mentioned, stripping her resistances from her shield basically means she'll be more bursty as a result when they do decide to buff her again.
Focus on her damage component. Namely her R's cooldown or W's ratio.