Let me put it this way. First, let's see what's gonna happen if we do Melia VS Madame X. I'll do Madame X winning first, she defeats Melia, takes her power, and makes Storm-9 happen again but this time instead of Melanie taking over the world Team Xen does it, which means the gang completely loses. Now let's say Melia won, Melia officially disbanded Team Xen, defeated (most likely murdered) Madame X, and the region (possibly the world) lives freely. Now let's put Crescent into the equation. She's officially changed all our friends' memories, and she turns the table and makes the ultimate deal: If we win, we get all our friends back to normal, including Nim, and she'll leave us alone. If SHE wins she can use us however we want or just kill us. Now let's put the two TOGETHER. We do the ultimate boss finishing double battle. Melia and the Player and Melia vs Crescent and Madame X, if we lose the world is doomed, but if we win we save the world, and we stop Spacea and Tiempa, or better yet. The final bosses are Spacea and Tiempa themselves. What's better than pinning the very BEINGS of Time and Space against the very player? Who knows we might get sidelined or we might get the ultimate battle.