Well something's starting to become clear, the new coach Moon has an actual vision (which was lacking imo earlier), and that vision includes (for example) his former players and not the French duo.
This leads to people not wanting to get benched into oblivion to leave, as I doubt we'll see Numlocked or any of the sister team's players on stage any time soon.
A pity for Soon, good luck to Unkoe, Silkthread and of course even more so for Envy.