1st Don't use Timber. He is rarely good. try Vladimir for example he is not expensive and he is quite good.
2nd if you think that one of your hands is week try to figure out what (cards) make it weak and try to change them.
What is your actual deck? What do you want to play with it? Elo, tourneys, survivor or deathmatch?
Well, ive changed my deck for dm just now but mainly want to use it for tournaments
i realized i havent got a lot of solid hands with my deck, but i was hoping versatility makes up for it?
im having trouble finding a good combo of cards in Freaks or GHEIST, which is why i put Timber in.
Basicly I would try to get more attack manipulation in your deck, because it makes your life easier- Otherwise try to focuc on higher powered cards.
For Maamoon I would use Karmov, because he is higher power and his ability is generally more useful. For Embolt I would try to get Bristone Arkn Esmeralda or Magda. I think this is not only the price list, but also the rank of utility.
Drop Embolt, GHEIST have two defeat characters at 2* that could be just as useful and not break bonus. Magda would also be a good swap. Try Olga rather than Olga Noel. If you want another GHEIST character Anibal, Draheera, or Jaxx Ld would be strong 4* to use instead of Vassili.