Starfire and Blackfire will play a big role in the next season. I didn't mention it before because this is an already known story-line that started in season 2.
There will be another Titans panel during the DC FanDome event in September. Maybe there will be more information revealed. Conor Leslie, actress of Donna Troy, was part of the panel yesterday - so maybe we'll get the return of Donna Troy in season 3 too.
The memes will go nicely with the "villainous" Damian Wayne memes that probably will pop up in the upcoming months.
-----
A belated birthday fanart by the one and only JJMK: