I will start what I have to say with this: I totally understand the frustration about today's cap and rarity raises. I absolutely understand how it seems overwhelming and a lot at once.
However, I find myself also wanting to point out a couple things as I've been thinking about what hit the newest servers today. When players started DS (yeah, I know that was waaaaaay back for many) you didn't begin at cap. If you started a server even after it had been open for a while, you didn't start at cap. Everyone had to work up through existing chapters and progress from Green to Blue to Purple. Then keep going through Orange and it's horrific grind up at O6, O7 (terrible grind) then again at O8 (still a killer grind).
Then a bit of a sigh at Cyan and C1. A little more tension at C2. Then yeah, frustration with lack of beneficial gear at C3 for most heroes. Then C4 (gasp! 100 scraps!) where gear was mostly good.
Now it will take those of you who were at cap (or maybe nearly there) yesterday longer to hit that cap again, kind of like when you started DS. As much as it feels awful, it's the same situation across the whole server.
I'm not making excuses for Gree's decision to throw this out all at once. I agree it was a crazy thing. I'm simply trying to point out there's another way to maybe look at it and not feel so, um, defeated or angry or whatever.