OGCD's, OGCD's everywhere.
We need more of these, and I don't mean during specific primal phases, or even during bursts. This job has many, MANY instants and short casts, which means there's plenty of space to fit in buttons to be pressed between them. The current amount we have is just too small, and while I'm not 100% sure where the balance should be, I have one proposition: Make Energy Drain a 30 second cooldown. More Necrotizes sprinkled into summoner's rotation would allow more active play, and make more readily available another button with a GREAT animation: Ruin IV. Only pressing it once a minute when it looks as cool as it does is a crime against Ruinkind. Twice a minute? Now we're talking. It -would- lead to us, with the current way summoner works, not press Ruin 3, which loses us a cast time, but the specific button gets used plenty during Demi phases, so losing one press during downtime wouldn't be too big of a deal. Plus, if you're sad about missing out on a hardcast, we might get more of those if the primals get more interesting! Other than that though, any additional OGCD's we can get squeezed into our rotation would be fantastic for keeping ourselves active.