I am not understanding the purpose of going to SZ93. Is it to try and save the French fleet?
Using the typical Gibastion strategy the English fleet would have 3 additional fighters protecting it in SZ92. Therefore, in SZ 93 instead, the Allied task force has an additional DD and CA but 3 fighters less. In addition, the British cannot take the AC hit early on because Southern France cannot be used as a landing zone. Thus, the Allied fleet is more vulnerable to an attack.
If the French fleet moves out then the British fleet is very susceptible to an all out German air attack. If the French fleet stays to avoid this then you still can’t save the French fleet. So I am not understanding the purpose of this move.
In addition, with no Naval Base the Allied fleet cannot move to protect against Sealion which is why many people do Gibastion to remove the Sealion threat.
Finally, from SZ93 you cannot get back to Egypt, thus the Italian fleet is free to move against Egypt with no ramifications.
I would not say this move is impossible to do but it certainly seems like a lesser path to travel on.