People keep saying Gwent is too unbalanced... as opposed to what exactly? Every single card game has a strong Meta and a difficult balancing process.
Since the time of Magic Tournaments people rotated around 3-4 decks.
At least we have a change in the Meta every month, that is the fun with a card game.
Except Ardal, a pox on him
Monsters are bad aside from Detlaff
SC is a little too strong
NG is in a bad state with too much thinning and too much control
SY was nerfed a bit too hard as I hardly see them anymore
NR is in weird state. If you aren't playing foltest commando's it doesn't do very well. Engines just aren't that strong considering the insane amount of control in the game.
SK probably has the least problems imo
The worst thing for me are the many many cards in the game that are too weak or too poorly designed and it's obvious. Also artifacts were horribly designed from the start. I don't know why they are even still in the game at all. They seemed to see the problem in how they keep nerfing them into oblivion but then we still have summoning circle hurting the game. If that card sticks at the beginning of a long round well good luck winning. Time to tech in artifact removal just to stop that one card lol.
If the factions and cards were better balanced the game would offer more choices to be competitive.