Sticker \ Ember Chat commands
Add a Chat command for Stickers and Embers. Ex. :GG: for GG Emote, >GG for GG Sticker, } <Text> for GG Emote.
The problem with this one is that adding such chat triggers is that it will add a delay to the message as it would have to query the Mixer API to check if you have enough sparks/embers to purchase said sticker. Which then again will vary depending on your ISP and so on. So it's not a viable solution.
What would help a lot is a search field on top of the Skill "flyout", or a favorite system so that the Skills you use the most ends up on a favorite tab that should be the first tab.