With a 1h cd, the lvl 9 altrar is liability, not a feature.
Players literally have to join every hour to farm it efficiently. Which creates inefficiency in everything else.
Maybe instead do the same we doing with gotchis? give it 24 charges per per day?
I think it emphasizes the positive to have altars need to charge up rather than cool down, and we could have a compromise with the current system by making it more like a battery recharge than a battery replacement (current gotchi timer is a replacement because you can channel twice back to back, whereas the lvl 9 altar could add a charge each hour which would prevent 48 back-to-back channelings).