sub gif emotes
maybe tier 3 subs get animated gif emotes like SourPls...
5 new subscribers emotes that are animated .gif emotes. that you can turn on and off (so they are not moving anymore) and so it doesn't get too spammy. well probably not enough so maybe make another option that you can turn on and off the animated .gif emotes in their own chat channel, so people can only use the subscribers animated emotes if they have them.