Nitro Gifting Suggestion

So I wanna suggest to you about gifting nitro you claimed... Like ordinary means, buying nitro and you can gift it to someone but, What I want is gifting someone nitro, a nitro you haven't used yet but claimed already this will put a minus depending on how many years/months on the nitro you claimed/own, Also a feature of you typing a number on how many months/years you wanna gift the nitro, for example, 12 months is 1 year so if you made it 13 months it's gonna be a year and a month.