I also think there are some people who are going to need a harder difficulty to resort to needing contracts.
My point is it would not matter what difficulty the game was at, contracts would still not be something you would reasonably choose over any other provided option given to you, its a death by a thousand cuts situation.
1. Edgar is weak, poorly statted, lacks any relevant abilities and doesn't scale well, so any combat related contracts that don't center around him facetanking are awful to pick up because they by extension don't scale and Edgar rapidly begins to get 1-2 shot by everything even with his high defence, meaning even his protect ability falls off a cliff and its only purpose is to force him to not use cunning acts.
2. Social contracts range from being completely avoidable via day restrictions, or debilitatingly bad to the point theres no reason to ever accept them (the date after character defeat is basically a walking noob trap that should never be picked up ever), these serve as little more than buffer contracts that are used to pay off decay every week and nothing else.
3. Mental change contracts are initally too low value to be used for anything, but are central to the system in that they have to be picked up to unlock higher cost contract options, Edgar almost never offers them however because of their low values.
4. This leads to an inevitable loop, Edgar won't give arousl increasing contracts as a 3+ day offer due to low value, leading to him repeatedly giving the same useless social contracts which lets you either get all the relevant combat skills (protect every turn so he can facetank a few hits) and then loops to the debilitating "date on character falling in battle" noob trap that you just have to keep refusing endlessly.
5. negotiating Contracts take up the singular late afternoon time slot, you are frequently starved for time in this game, with various activities you can do in the single time slot meaning theres almost alwasy something more valuable than taking one of edgars absolutely useless contracts
6. all of this means theres no reason to directly interact with the system whatsoever unless you are literally forced to via decay, and interacting with the system causes you to just waste time and intentionally debilitate yourself in the process.
SKA avoids this because the corruption system is fairly linear, is its own unique time slot that doesn't affect the other games time slots, and the lower tier effects don't have the same debilitating game effects some of the early liora effects have.
Theres also a much higher incentive to interact with the system due to the corruption you don't spend causing Auras willpower to get debuffed, theres no incentive to interact with lioras system in the same way.
I personally would incentivize interacting with the system by either making Edgar far more powerful early on then he currently is, or making the initial mental change contracts he offers linear power boosts specifically for him, and make him continously offer them every mourning as a free action ,this is initially seems like a good deal,but remember, when he kills enemies he takes gold/items from them, which forces you to either make contracts to get these items back, or results in him gaining even more power and scaling out of control, taking everything from you and forcing even harsher contracts.
Add a condition that he won't use his out of control stats to target the dungeon boss without super expensive contracts ,and bam, you've given an incentive that leads to Edgar being able to "win" the game without forcing the game into a grinding halt, as the game now becomes a balancing act between making smart contracts to keep progressing while keeping Edgars power level under control.