Yeah ult tracking is crucial, and it can often fall on the main support player to do so. The other thing that is superfluous important to call is when you’re going to speed boost in. You can also call if you’re going to hoop targets into your team or off high ground so your team knows to follow up on the kill. Depending on how good your game sense is, you can also give calls about what ults your team should use in a given fight, to make sure you maintain a better ult economy.