I knew this was going to happen and I expect several more next year to be honest (looking out for the owl).
Speaking about the specifically from a marketing standpoint, this is unfortunately going to happen but it becomes dire when you consider that most of their talents that are beloved are the older ones as opposed to the newer ones imo.
The sole exception are the dogs because they've popped off in a very specific way, but if any of the fantasy or myth girls end up leaving it's going to become very obvious that there is going to be a huge hole within the company that just can't be filled.
The best comparison I can make is pokémon, because regardless of what anybody thinks of the new monsters or their games they objectively have performed better than their predecessors so the misgivings don't really matter to the officials.
It's the exact opposite here.