If I can give my opinion about a change of class bonuses : in my opinion (so it worths what it worths, don't kill me if you disagree lol), in a very general point of view, the class bonuses should allow players to have game possibilities different from each other but they shouldn't bring advantages allowing to have better results (=allowing to win more often, to be better ranked, increasing stats).
An example of what I'm talking about could be some of the duellers bonuses. They can duel without moving : it doesn't allow better results, it is advantageous (no need to move in a lot of cases), it is related to duel and only the class of duellers can do that so it makes the duelling experience different for duellers compared to others. (I'm just illustrating what I'm talking about here, I'm not saying this to complain it was supposed to be removed).
If it isn't like that, in my opinion it can only lead to an imbalance between classes. That's what I personally reproached to this update : there were still bonuses allowing advantages in results for some classes and some classes still didn't have any bonuses in some fields while every others classes have. In other words : it still didn't seem balanced and could cause new types of problems ...
I don't know if a lot of players would agree with that cause it would imply to take back all bonuses +x% SP, AP, xp etc xD
Except the damages. In my opinion, the damages bonus to duellers in FF should still stay the same cause they are very important to lower the HP of very high HP tanks. They also should stay specific to duellers cause if too many fighters can crit, it can become unplayable for tanks. BUT the ranking/xp reward formulas should be changed in this case to not (or less) take into account damages but instead : the number of successfull hits. These ones depends on the skills/attack bonus, while the amount of damages can be class related, so not so fair. Damages would become as useless for individual stats than ghosting is for adventurers, but still represent an important role in the strategy aspect in FF.
All classes bonuses should be this way actually : the "+25% of his own leadership for the soldier + his 4 neighboors", maybe it'd be good to put it as "+25% of his own leadership for the 4 neighboors" (and not for himself) : this bonus wouldn't have any impact in the personal results of the soldier but would become a strategy bonus regarding others' results (including other soldiers). Soldiers should need another FF bonus cause it's their field (and for this, I don't know : would it be possible, for example, to allow soldiers to swap with offies ? It could be a huge help in battles and even bring a new dynamic, still without having a bonus increasing personal stats).
The thing is : if there is no bonus increasing indivual stats for others, there wouldn't be any need to change the advent FF bonus. This bonus is already only strategical without being taken into account in the ranking. I think it's now taken into account in the xp reward, so maybe it should be taken off. As well as the multiplifying factor for adv in the ranking.
In the end, there's still a bonus to find for workers (maybe something related to resistance or damages ?) and we'd be good with FF ... *aureole*. More seriously, it's just to give an example, surely not the best. And the idea is : it should be the same for other aspects of the game (=bonuses allowing to have a game possibility different according to the class, but without allowing to have better results).