I absolutely love the inspiration system. I feel it's 100% perfect, with just enough complexity, and just enough reward for the intelligent player who plans and varies.
However, concerning the humor system, I said the same thing in H&H and I'll say the same thing here.
I detest the fact that humor is based on the highest "other" statistic. Put simply: the amount you need to level blood should only depend on blood. The amount you need to level BB should only depend on your BB. And so on. My suggestion is simple: change humor gains similar to the inspiration system, with an exponential increase in what is required for the next level. It would still reward good planning in gluttony, and still punish mistakes.
(An alternative to this is an idea proposed by Procne in this thread, where it depends on the total (sum) of all your humors, not just the highest one. I really like this idea)
Basically, I believe the punishment is too strong. It's a carrot/stick situation. If you want to be casual and carefree, you should be allowed to do so without punishment (but forfeiting benefits). In other words, if you want to be a person who just eats everything without thinking about it at all, you should be able to do that with no punishment (but suffer the extra benefits planning your food gets you). But currently if you're a person who just eats everything without thinking, you get absolutely raped by the system and will probably gimp your character.
Just my opinion. Jorb and Loftar/other devs, I know a lot of people on this forum probably love the current system. But you have to bear in mind that those who post regularly on the forums tend to be the ultra-serious ones who take the time to research and master the game. I believe I speak for the community without a voice - the more casual gamers who just want to play and have some fun, eating and levelling without worrying about gimping their character.