I mean, not really "reward" attentiveness, most fights once you know them come down to counting gcds anyways, so you can fully focus on mechanics and it'll pretty much be the same thing everytime. A3s especially heavy on this, you end up clipping lead at 12s or there's no time to refresh it later after the first sluice, then you need to clip hotshot at about 18 seconds or it'll fall off at a really bad spot

I wouldn't really call them that at all, like, they're usually your highest potency attack and are pretty high on the priority lists. Do you call Heavy Thrust an attention check?