Hellsmoke : stay strong my friend. One day, Francesca will shine.
As said before, I really think that Brouver, and any other card, should be unable to tutor a silver spy. It generates huge problems of balance.
But I also think that preventing Brouver of drawing Yaevinn won't solve the problem entirely. He will still be able to abuse the silver spy in round 1, if he already has Yaevinn in hand.
Which means that Brouver players will have around 50 percent chance of making their crazy combo, instead of around 90%. The old dwarf will lose some consistency, for sure, but will remain a frustrating opponent.
Reworking Cleaver could indeed be a solution.
According to the last meta report, 27% players right now are playing Brouver at high ranks. This is depressing... A change is needed.
However, I also hope that CDPR has planned some kind of compensation for Brouver (and ST as a whole) because his necessary nerf, and the nerf of wardancers, could be his end.
About the dwarf archeytpe : I don't think it is totally bad.
Dwarves have some good bronze cards (agitators, skimishers) and some of the best silver cards of the game (Hattori + Barclay + Paulie is a devastating combo). But they have a huge flaw : their lack of synergy.
The only card that really creates some synergy is Dennis Cranmer, which is clearly not enough. They really need some new cards.