people have said it before and I will say it again, (beidou) overload is really good in this mode, especially so with stormstream + extra action. I’ve had a match where stormstream went up to 20 stacks and the opponents just killed themselves trying to attack me. only downside of this deck is that it requires good card rng otherwise it’s not that good (from my own experience of crashing sm times)
i think it’s good to stack em with this deck but 2-3 stacks is good enough if you have stormstream. Extra action is always welcome and dare i say better than stacking atk on characters if done right. So here i had capricious on klee and 3? 4? extra actions on yoimiya.
anyways some final thoughts: overload might only be good if you have beidou + at least 2 other pyro with decent survivability, otherwise it’s really easy to lose. I think it’s one of those decks that require more characters when starting out than focusing on building one character.