I had literally just got every Escape character to Level 5 on all cards, barring Kat, who I don’t use. The aim will be to get all to L6. Will take some time!
Hello,
There is a theory that I highly feel it’s true that after you get the very important cards up to level 5, which was the maximum level till tomorrow, you will get a load of them after.
For example, Keegan, I grind Keegan for several days on a raw, and was struggling to get Shredder card, but after reaching level 5 it only took me 6 hours of playtime since yesterday to get another 20 cards.
So yeah, the first two characters are Cole because he is my main and Keegan.
Well, card-wise it’s getting the equivalent number of cards as it is from levels 1 to 5 so it’s a bit of a grind! Although it should be easier to get high level cards with a high level character.
At least it will keep you off the streets 
Griffin…If we ever get him that is.
It might just be me but I find it easier to get Legendary cards now. Yesterday, I finished off 20 Legendary duplicates for Emile and Sarah, just ready for Level 6 cards. But the Epics would still take more longer. And it helps that drop rates have improved recently with more Legendary, Epic and Rare percentage. At least Level 5 cards to get 20 more, it won’t be necessary to constantly upgrade cards from Level 1 to 5, which takes a short while.
I think it may have been RNG and some sort of placebo effect. It may look like getting more of certain Level 5 card, when it might just be RNG makes it seem like that. It would be harder to say the same thing for Epic, Rare and Common because they have multiple cards, and Legendary is just one or two (Cole).
Say Master was 10% Legendary, 20% Epic, 40% Rare, 30% Common. For example. A character could have 1 Legendary and 3-4 Epic. That means Legendary card has 10% chance, and one of Epic card being Epic Score Boost would have 5% to 6.67% chance. Maybe if there’s 4-6 Rares, that also means 6% to 10% chance for a certain Rare card. So Legendary is high up there, relatively compared to others on Master. Not sure about Incon, but should be similar percentage for Legendary and Rare. It seem getting certain Epic would have lowest percentage of all.
My Mac will be nearly at level 6 cards when the update drops.
If the gears coins payouts are good I may consider doing other characters as well, my Lahni will be close to level 6.
Definitely Emile. I only really have to grind his legendary but everything else has already close to 20 thanks to early speedruns when he was good lol
Lizzy Lizzy Lizzy
Escape or Frezy the best for grinding cards?
Escape, Surge speed run. But there is a 50% chance that you will die through boredom.
I might go Horde Frenzy for variation when Operation 4 launches. 
My Lahni is maxed and has 22 copies of her legendary skill. But… will need some effort to get Venom Blade and Thrill of the Hunt up to 6th.
None
Added a pic to the OP. I hope there isnt an achievement to get epic score boost card to level 6.
Not only is there one…
All 9 launch characters for Horde and Escape must have level 6 epic score boost cards!
Let the grind begin 
If they did scrap/gears coins for cards after skill level 6 then my epic score boost cards would probably offset the 1 epic skill per character that RNGzus keeps at level 4 permanently.
I got over 30 for each of the green cards for Mac, so probably him.
Baird and Cog Gear first as they’re already Lvl17 with almost all their cards at Lvl 5 already. Then Kait, by taking her through Escape on Insane speed runs through The Surge. After that I’ll see how Paduk is as a character, and whether he can go through Escape or not. If he can’t, then I’ll hold off until he can. Escape is the only way to really level up characters in a timeframe that isn’t considered tooooo grindy.
My second character to get to level 6 is Fahz. Longshot handling on 100% is pretty cool.
What you mean by “WHEN” he was good??