I have 2 TC2 running for a month until the next Atlantis Rising. My other one is churning heroes on TC11 function. My last one is working on TC20 function for storing food, and if it resulted to Elena, Isarnia or Quintus, they would be bonus as those are the ones I lack to complete my S1 heroes. I need to store food for later use, either for improving troops to a higher level, for research current and future building functions, etc.
My HA is working on HA6 for 3* feeder troops and for storing iron for future building upgrade or leveling. HA10 for retraining dupe legendaries as I still refuse to feed them to my other better legendaries. I am still hoping SG fixes or improves Hero Academy though by reducing the training time, lowering cost of building, research and training/retraining, and by allowing players to use not 2 max functions but at least 3, similar to how Alchemy Lab works nowadays.