I did a thing with shields and made a video.
Shields now have a health which scales upwards with level. Regen also scales up with level by the same ratio. Your shield uses your defense and absorbs damage up to a certain point. After which your shield breaks and becomes unusable for a short time.
This eliminates the rather odd reliance on energy we previously had.
Hope you like the change. Sorry about the sound desync problems in the video.