A suggested feature (don't know if this has been asked before)

Would it be possible to set it up so you can give away a game but the only people who can enter are those who have recently given a game away to the community? This isnt purely to exclude part of the community but a way to say thank you every once in a while to those who are contributing to this site. Like you could set it to only be entered by people who've donated a game within the last week/month etc. I do understand it can be set to private entry or group giveaway but that doesnt fully encompass everyone I was referring to. Feel free to comment negatively or positively I havent been on this website very long and am happy to hear all your views.