Why can't you ping aftershock cooldown/sejuani passive?

Both are extremely important for a champions kit to function at times.

Aftershock is front loaded in what it does, with a big cooldown. Being able to ping your cooldown so your team knows when you want to go in is important to show in a timely manner. Currently you cannot ping your aftershock cooldown to your team.

Same with Sejuani's passive. Huge armor/mr buff long with 100% resistance towards slows. Extremely important, yet you can't ping it. What gives?