Well, even with the 300 million bounty increase, it is fair to their feats and power. Zoro, Sanji, Jimbei and Robin all had their own fights which gave them a bounty worth their threat. The only exception is Franky who also had a 1 vs 1, but his bounty still shows he is a Veteran tier, as he wont have his Franky Shogun to help him, I think this a fair bounty for him.
Usopp has a bounty he doesnt deserve, but it doesnt matter, his increases has been from false hype and increases from the crew.
So, Zoro and Sanji have the bounty they deserve for their feats, I wouldnt take away some berries, in fact, I think they deserve more due their real power level. While Queen and King, I think only Queen suffers of the increase of being from Kaido's crew, his bounty should be 1.2 billion.
So:
Zoro : 1.7
Sanji :1.4
King: 1.39
Queen: 1.2
And If I had to include Katakuri, it will be 1.45 Billion.