For Multi-crew to actually be of any benefit rather than just fun, there has to be a bonus for it. Launching your second fighter via MC is a good solution imo. It's similar to getting an extra pip for a Player gunner.
How horrible would that be if it were "just fun," thank goodness they incentivized us.
Anyway you already get an extra pip for each crewmember, whether they are gunners or fighter pilots, which ought to be enough of a benefit to justify using a player over an AI.
2 AI launched fighters would be better for everyone, because it would encourage more people to fit the fighter hangars in the first place, which in turn would mean there are more viable ships out there for people to multicrew into.