Welcome back @Ranzeth 
The SV Shield you mean?
What value would be better?
That is a relative statement if you compare it against other structure types or compare it to Plasma or think about the damage, once the shield is gone?
If it’s really a common sense for everyone, I have to rework EWS regarding that and implement on top of “Very Effective” something like “Ultra Effective” 
Fix is coming soon Eleon told me.