As a player with thousands more hours in the game who doesn’t use FA off for anything other than planetary landings I disagree with your proposal and your right to speak for new players in this matter.
This

I have more than 8500h spread over 3 accounts. I fly FA ON most of the time.
I really rarely fly FA OFF, usually if/when i do old school 1-on-1 with thargoid interceptors or when leaving the station i find that my hyperjump destination is behind the station i just left - in which case as i exit the mailslot i FA OFF, boost straight, wait till i clear the station mass lock, then engage hyperdrive, turn 180, turn FA ON and boost - then the timer is up and i get into hyperspace... Much faster than flying around the station to clear its Mass lock

I do remember when i started on XB - the first session was a real mess with me trying to figure out how to leave the station in the starting Sidewinder.
However, i dont think i would have ever got into it if it was FA OFF from the get go.
At that point you have to question the intent of the design - if the intent of front loading the downsides is to get players to commit to filling it up (even though they don't know how many materials it will take because of the RNG based rolls system and how long those materials will take to gather because of the RNG based drop system) then encouraging players to not fill up the bar or not engineer everything to G5 means the design isn't quite doing it and could be improved.
I take this as something for the OCD completionists - which i am when i have materials, and i usually always have materials.
And i like it's there as an option.