(Before I start, a discriminator is the set of 4 numbers after someones username)
Some people (like me) don't like buying discord nitro every month just to preserve their discriminator, so I have an idea that might fix this. Make a purchasable "discriminator change" that costs $2.99 each and they allow you to permanently change your discriminator, even if you have nitro and it runs out, however if you change your discriminator again with a nitro subscription, it will still randomize your discriminator after your subscription runs out. If you change your discriminator with this changer with a nitro subscription and it runs out, you get to keep your discriminator until you decide to purchase another change or change it with nitro.
(These discriminator changes could also be gifted to other users, similar to nitro)
(These changes can be purchased without having a nitro subscription, some people might want a certain number without having to buy nitro)