Don't want to spoil oïl on water, yet I understand some comments here.
I do agree that limiting cards may be in order to prevent spamming of Formations.
I believe there is a very efficient way to do it : consider cards that are similar and draw some sort of diagram to pin-point how many of those can you take.
For instance, the German Armored Cars : there are currently 2, potential 3 with Kursk, card allowing German players to field German Armored Cars formations.
Yes, they are different per se (a DAK Armored Cars unit is not an Eastern Front Armored Cars unit (not the same organization, etc.)), yet they are very close to be honest.
So it would make sense to state only 1 Formation of this type is allowed, as per others Formations.
Yet, I do think that you can't limit certain cards because :
- it isn't the way BF planned them : for instance, using Fighting First, you can only field a "Green" Armored Rifle Company. BF doesn't make a "Trained" version and a "Veteran" version because it will lead to more pages published, while a single card allow players to field it. A card allow you to field a "Veteran" Armored Rifle Company, there is no point in stating only 1 platoon can be upgrade that way. For the records, not disclosing anything, but working on Kursk, BF explained us why they prefer making card to depict new Formation instead of Formation being comprehensively depicted in the book (for the sake of both clarity and costs). So it appear clear limitation here is not in order.
- certain cards force you to spam it. For instance, the "Scout" card for the British Crusader and Stuart. You HAVE to select the card for all units. You can't select only one. So if cards are limited to one by the rulespack... how can such cards can be plaid ?
On a general pattern, I don't believe there are "broken" cards at the moment.
Some are good, some are very good, some are OK, some are poor, some are circumstancial, yet looking at what had been published so far... nothing too shiny IMHO.
Also, concerning the pairings, I agree with M1le : pair up process is fully part of the ETC.
It's a team event, so it shall be plaid as such.
It also counterbalances the fact that your 6 players can't bring what they want and have to make concessions for the team, so it legit to have some sort of balancing process.
The pair up process was done in 2018 prove to be very efficient and fair.
I don't see a point in changing it.
Cheers from France,