Something happened that makes me wonder about the last events.
Before going out for shopping, I looked at my Lillywood team, to be sure it's still weak for the saturday missions ^^.
After coming home, I attacked some raid bosses then went for a 80 stam event mission, but I didn't see the game had selected my Lillywood team. Only after a few moments I realized "damn, 80 stamina wasted", but NO, my poor little girls managed to finish the stage without a signle loss (but with a big participation from the helper).
That made me think if these lasts events are easier than those from 4-6 months ago. At that time, I had just a few high level girls, and it was difficult to finish all the missions chests. Of course, since then, my squads are full 70 and there are 6 rainbows, but now, I start a mission without even looking at the solar blast...
edit: I'm refering to the event missions. The campaign missions are quite harder to get a full clear.
Also, doing some reissues, it seems we have less RNG missions (look at Calla event)