It would be neat to have a store selection tab in our accounts, where you can turn all shops individually (keyshops included) on and off, also a permanent selection of DRM you want. For example, I never ever ever want to buy anything on Epic Store, Microsoft Store (other people don't like to buy on other stores) and some other, so these results get in the way.
These are two things I manually set EVERY TIME.
In - a seperate - edition, have a Humble Choice subscriber input field somewhere, where you can enter your discount there to include it in price calculations.