E2-3 is an interesting one. You'll need speed-separated squads for it - 1-2 turboquick at lowest spawn, and rest suuper-slow, at highest spawn.
One sanik quad is probably better, so second rusher won't accidentally go to the lower lane with tornadoes instead of higher, with cobwebs and pest. Rest is up to the Random Number Goddess.
Aaaaactually, nope. Done a 50fg roll (meh, 2 silvers, of that 1 new, and another 1 new bronze) - and Limited1 stayed on the Gacha screen. So most likely we'll have it for the full duration of the event.