An incentive to gift more subs would be to "throw in" additional gift subscriptions when purchasing bulk subscriptions.

For example:

5 gift subs gifts 5 subs for $24.95
10 gift subs gifts 12 subs for $49.90
20 gifts subs gifts 25 subs for $99.80
50 gift subs gifts 60 subs for $249.50

and so on. I'm thinking a 20% bonus at each tier, or the bonus could even tier up based on the amount. I believe it would create incentive to gift even more subs as the gifter would be given credit for the gifted amount, rather than the base amount.

In theory, you'll get more LARGER gift amounts, and that also increases the chance subs will be gifted to someone who will choose to continue said subscription as well.

I believe this would be a win for everyone.

Provide custom servers for channel subscribers/twitch prime - this would allow streamers to play with their communities without the hassle of renting a server, plus you could charge more for prime if it was included to be able to join a custom server of the person you use your prime sub with. It would stop stream snipers as the streamer would have total control over the server, plus as it would be provided by Amazon, they would be able to use all the latest security to avoid it being DDOSS'd and hacked.

I feel this is really needed for certain games that are prone to being DDOSS'd on custom servers like Battlefield 4, and most likely a lot of other games.

Changing the way the founder badge works would be nice. The current system allows 10 founder badges for Affiliates and the Partners, 25.

My proposal is to allow people who sub in the first 24 to 72 hours of the streamer getting the sub badge to get a founder badge, if the streamer does not get up to at least 10 founders in that time frame, it will continue until the 10th founders badge is there. That way, for people with bigger communities, they people who sub day 1 still get rewarded, since they are still technically founders, just unlucky to be sub 26 by a few seconds.

It's just annoying when a community of people all sub day one, and majority get cut out due to small limitations. Also, most founders in many channels are no longer there, so it makes it even more scarce after years of streaming.

Even allowing the streaming an option/rules to the founders badge themselves as partners could be a good incentive.

Came across this while reading about sub gifter badge: "It stays visible for as long as any gift sub you have given is active, and disappears when your gifted subs expire" I found out today that this was a thing. Which to me is strange because some people gift a lot of subs to support a streamer and the one perk they are being given is temporary, lasting a month at most. I thought it was a bug that the sub gifter badge would go missing but that apparently was not true. I really think it should be permanent. Some people have hit a thousand gifted subs in channels only for it to disappear.