I dont know if anybody has been that deep into the game so I have no idea why it would stop working at day 145 haha.
I like your ideas, ill give you my thoughts on some of them :)
In endless i think fbi (or other boss clients) repeating occasionally would be a good idea that we wanted to implement, but havent got around to yet.
In the next patch a lot of the box stuff is going to change, you won't own and have to level boxes, they will be tied to clients and relics will be separate rewards.
Rerolling dice/clients/relics will probably be available through relics in the next patch
Yeh the poy and Glitch combo is definitely getting nerfed haha.
There are a few ways to increase the base value of dice (sun is one atm, but there are a lot more on the next patch)
Clients are also changing a bit, they will not have as many "give me x type of dice" requests, and are more things like "each dice must have atleast 1 adjacent empty slot", and might punish you if you ignore then too much ;).
If you want more info about stuff planned for the next patch there is a fair bit of discussion in the discord.
Thank you so much for playing and putting so much thought into our game :)