Sorry but Curse Voice is currently forbidden for 2 reason
1. Automated timers: while our design team is still exploring whether we’d want to add any kind of built-in timers to League of Legends, we agree with many of you that having it accessible only through a third-party app is a clear competitive advantage between those who download it and those who do not, and isn’t acceptable.
2. Automated voice calls: We have no problem with players hopping on Curse Voice (or any other voice chat client) to coordinate with their friends in-game, but when the application begins directly connecting you with dozens of other people in unfiltered (and untrackable) voice chats, it can make for a huge negative player experience in a space where we can’t help.
And so I think seeing the team cooldowns would also be forbidden. When Riot changes their mind we surely can talk about it again. =)