Well, we have no shortage of characters. How about story ideas? My old fic suggested that Brainiac (as in a Brainiac from Krypton, following the DCAU) was trying to access the computer systems of the ancient Silver Millenium palaces and this in turn disrupted the powers of the Sailor Senshi. Our heroes had to team up in order to stop Brainiac before he turned the powers of the Senshi against them. But that's just one idea, others would be nice.