Menmaru
Alberich
Flagg

Evangeline?
Mordred?


And on the other side or middle field

Nanoha
Tohka
Youmu
Vita
Emilio
Tenshi
Ben
Misaki
Hibiki
Andersen
Asterios
Leo

No. I wouldn't say we have enough. As for trouble and conflict, you almost make it sound like it is a bad thing. Personally I see it as an opportunity for all manner of forces to play their part and possibly grow closer to those who are actually fighting on their side.