I’ve never tracked my win rate, but with the formations in play now I do find myself losing more for sure - I think I went from winning a majority of fights to less than half (partly I may be too stubborn to retry losing attacks too much). But I wouldn’t use the word “impossible”… it’s just harder at least some of the time.
My feeling is that I still need to get better at how to fight the new formations. I’ve seen someone mention that 3/2 and mono is less effective and I think that is right. Before formations my typical attack setup was 3/2.
Now I’m trying different things, make team selection more focused on bringing the most optimum special skills rather than stacking for tile damage first, which I think is helping. But it is just harder to make a hole and create some breathing room with any of the new formations, and I find a lot of fights just take longer even if I do win in the end. Of course there is the thing where nearby-hitters have a big advantage against the double/reverse double formations, and my roster just isn’t strong on those, the fast ones especially (no GM or Drake for one). I’m bringing Miki along more, but he is too slow a lot of the time. Maybe HA will be nice one day and give me Hel or Drake or GM (or a lucky S4 pull)…
Also I have to say it is Krampus in particular that I see a lot on defense, and he is quite tough to bring down, all the while the rest of the team can beat you over the head till its too late sometimes. Eve/Lianna/Greg can work nicely here, but if the green tiles don’t come fast enough… Also dodge can be extra frustrating (C. Kadilen, Jade, …).
A little bit strange considering all of this, but I find I am still holding 2500-2600+ cups most of the time, sometimes upper 2600 for longer than I used to stay there. I guess my own defense must be slightly tougher using the reverse formation (now trying double, but initial impression is that it’s less effective for my particular lineup). Another interesting thing I noticed is that in the past the global top 1000 rank would be close to the 2700 cup mark, I think now that is closer to rank 3000 instead. So I guess that probably means the top players have been able to take advantage of the new formations relatively more than the rest of us (not completely surprising really), concentrating cups more towards the top? Doesn’t really matter to me but I found it interesting to see.
Anyway, I’d say overall, for me at least, it’s a matter of still developing better strategies for the new formations, and also maybe some roster optimization for it as possible (…but I won’t do that unless this becomes a permanent feature). And even if it stays more difficult overall, it is still welcome new variety IMHO (and it applies evenly to everyone, except those without HA are at a disadvantage defense-wise).