Ok, clearly I'm missing something. Is it the idea of the Flight/Tactical Specialist that you don't like or is it the idea of backups being drawn from outside the specialist rating?
If a) in TOS, Helm, Nav and Weps functions were accessable from the same console, and in ENT and TNG+ Helm and Nav are combined) - as I've based the notion there on existing ST systems, and that of the six modern naval forces that I can find decent info on (USN, USCG, RCN, RN, RAN & RNZN), apart from in the USN the "Bo'sun" includes both seamanship (BM) and navigation (QM) functions and often requires at least the ability to control the guns (GM, although the torpedoes/missiles and the engineering are usually left to dedicated ratings) and is referred to as either Seaman (Combat) Specialist or BM, rarely as QM in the US Navy sense. The closest it outside the USN is as the title for the seaman/BM acting as helmsman (and called them "Helmsman" or "CONN" makes a lot more sense to me) or slightly more similarly as the title of the watch supervisor of the brow when the ship is in port. Another reason to avoid Quarter Master as the name for your "pilot" rating is that in French "Quarter Master" (both French and Belgian navies) is the rank given to Able Seaman and Leading Seaman (roughly equivalent to the USN ratings CN (striker) and PO3) regardless of trade, and this might cause confusion whereas BM is unamiguous?
If b) Well, cross-training for other things (medic, damage control, security watch) are a thing even in the USN, and it seems logical that small to medium density crews would favour having personnel for "secondary roles" be able to backstop the primary functions even if they aren't rota'd into them as their regular job? On the other hand, larger ships like the Enterprises capable of accommodating thousands of crew are unlikely to require this level of "cross-rated" redundancy and like with Security on modern carriers are likely to trend towards using only the experts in the role.
If a) in TOS, Helm, Nav and Weps functions were accessable from the same console, and in ENT and TNG+ Helm and Nav are combined) - as I've based the notion there on existing ST systems, and that of the six modern naval forces that I can find decent info on (USN, USCG, RCN, RN, RAN & RNZN), apart from in the USN the "Bo'sun" includes both seamanship (BM) and navigation (QM) functions and often requires at least the ability to control the guns (GM, although the torpedoes/missiles and the engineering are usually left to dedicated ratings) and is referred to as either Seaman (Combat) Specialist or BM, rarely as QM in the US Navy sense. The closest it outside the USN is as the title for the seaman/BM acting as helmsman (and called them "Helmsman" or "CONN" makes a lot more sense to me) or slightly more similarly as the title of the watch supervisor of the brow when the ship is in port. Another reason to avoid Quarter Master as the name for your "pilot" rating is that in French "Quarter Master" (both French and Belgian navies) is the rank given to Able Seaman and Leading Seaman (roughly equivalent to the USN ratings CN (striker) and PO3) regardless of trade, and this might cause confusion whereas BM is unamiguous?
If b) Well, cross-training for other things (medic, damage control, security watch) are a thing even in the USN, and it seems logical that small to medium density crews would favour having personnel for "secondary roles" be able to backstop the primary functions even if they aren't rota'd into them as their regular job? On the other hand, larger ships like the Enterprises capable of accommodating thousands of crew are unlikely to require this level of "cross-rated" redundancy and like with Security on modern carriers are likely to trend towards using only the experts in the role.