So since Neuro likes to say goodbye so often then how about making it in to a small competition of sorts. Collab partners will appear on her stream one at a time and will try to have conversation with Neuro for as long as possible until she ends it (bye, see you late, etc.) Time it to see who managed to last longer.
I understand it might be complicated for average stream but how about during subathon? Having cameo appearances like this during stream would also be cool imo.
although maybe points instead of leaving