Pawn's Need Bars are no longer clamped to 100%.
In a vanilla game, when a pawn eats a full meal, around 10%-20% of the food is wasted due to hunger being capped at 100%; this gets worse if you consider children, modded races with small body size, or small animals. Similarly, if a colonist just woke up and decides to take their daily dose of wake-up or Ya-yo, the effects are just wasted. Dealing with these requires a lot of micromanagement, or avoiding those meals and drugs altogether.
This mod allows food and other need levels to temporarily overflow. Chickens can now digest a whole bush without wasting nutrition. Other mod's large meals (with >1 nutrition) now also makes sense. You can also put your colonists on a regular schedule of Wake-up and know that they will always receive the full +100% rest effect. Your Legendary thrumbofur armchair and golden grand sculpture can also provide the full comfort and beauty benefit they are capable of.
Pawns will still think of 100% as their cap. So they won't actively try to overflow their need bars when it is already nearly full. If they are near 100% on food, they won't start eating (you have to force feed them to further increase nutrition level), and when they reach 100% rest, they will wake up immediately (you have to force them to rest (requires other mods that force rest) or use drugs to further increase rest level), and when they reach 100% recreation, they will stop playing (need force recreation(require other mods)/use drugs to further increase).
Additional Effects
There are various optional buffs/de-buffs related to each need overflowing. The current version supports:
More would be added in the future (current ideas: more inspiration at even higher mood, nicer talking to others when high mood).
Required: Harmony