Synch Symbol for locked Skill Icons

Would be nice if the Skills that cannot be used because of Level Synch also displayed the Synch symbol (S inside a circle) inside the skill Icon.

Skills can already be grayed out because of various reasons, such as lack of Mana, out of Range, and "just went on cooldown".
So it would be nice if we could easily distinguish at the start of a duty exactly what skills are locked due to Level Synch at a glance, including the Cross-Class ones.

Plus, I think this would be a simple addition, probably wouldn't even need to wait for a new expansion:
1 - The symbol already exists.
2 - The game already has a check for whether to gray out a skill icon.
3 - The game already checks whether the skill is locked due to Level Synch.

Agreed. This would be a big help. "This skill is unavailable at the moment" is quite different from "this skill is going to remain unavailable throughout the whole run" when it comes to deciding on other skills that might lead to it. It'd be nice if that difference were clearly identified.