I'm pretty sure this exact functionality exists already, I've definitely seen group specific giveaways. How to make them I wouldn't have a clue though.

Make a new private group and invite only people you wanna give a chance to win. Probably the easiest solution right now.

yeah, you can do this already. i found a private giveaway once that was specific to a group

He means that you have to be in his steam group, AND watch his stream to enter it. So people who are constantly wasting their life on his stream and are in his steam group can only enter it.

this would be a great addition imo

In other words, what you want is a private giveaway that none of your intended participants can share.

Probably the only way to do that is as WilliWuerstchen said. The downside would be you'd need to check who is/isn't in the group every time you make a giveaway. You can either kick everyone after a giveaway has ended and then let them back in for a later one, or let them stay and next time carefully add/remove who is and isn't watching your stream. First might be easier since you could just briefly make the group public and then private again after they've joined, but only if you're not worried about lurkers watching your stream getting in.

This is a good idea, but i think that, when creating a private-group giveaway, the gifter could get some options at his disposal, like seeing if the entry belongs in the group you mentioned, and if dont, you can either report or kick him out yourself.

Another idea i have is to simply change a bit how the private giveaways system work, in the way that, whoever gets the link, needs to also get a unique key to enter that giveaway, sort of like the Steam Guard system which sends a unique key everytime you want to log in a computer who doesnt have the cookies of the site loaded already (alot of work for mods here unfortunetly).

Seems a bit like overkill. You can already specify requirements for private giveaways and have it rerolled if someone enters without meeting them.

Nice idea!

You could also just do the giveaway outside of SteamGifts. Make a list of those you want to have a chance to win. Number them. Then use Random.org yourself to choose a winner. Done! :)

Bump after a week.

make a new group XD