People are put off from Toribash because of the learning curve there is for beginner players and people are not willing to put in the time.
I'm pretty sure they would also have to pay a fee to get the game onto the Discord store which in return could give nothing back.
So, I feel this idea wouldn't exactly work.
Discord store still has way too convoluted backend, lackluster support for microtransactions and would require us building extra 2 game builds (Windows / macOS) with each update.
As a verified server we got store access for free but it's unlikely that Toribash will get released in Discord Store any time soon.