My Idea is the option to promote single tweets directly with the BAT Advertising system. When somebody uses Twitter with Brave, the browser is aware of that the user might be interestet into tweets and can show notifications promoting a Tweet. Based on the urls he visites on twitter, the browser also could detect which Tweets the user is more interested in.
Another Idea is the possibility to buy such ads directly inside of the browser using the funds of the brave wallet. So that you can buy attention instantly. The BAT is a unit of account for attention and more and more twitter users get their Twitter accounts verified for Brave and Twitter which is important tool for communication and interaction in the web. I think there are possibilities to get usability out of this.