I actually just Downloaded BFV.
Started the game. played a little, exit the game. then open both the PROFSAVE_profile (Battlefield 2042) and PROFSAVE_profile_synced (Battlefield V) looked for all input settings. made sure they matched code wise (they Mostly do!)
Then i just copy every GstInput Line from BFV and replaced every GstInput in BF2042. I Finally had some BFV Aim Feeling back! it felt so accelerated i could not aim at all. felt so unnatural.
Only thing i had to do was tweaking the GstInput.MouseSensitivity line (on PC) and now it feels Similar if not Exactly the same as BFV. (for vehicles same thing. tweak it till it feels right)
IF you are going to try this yourself MAKE A BACKUP OF THE ENTIRE BF2042 Settings folder and place them somewhere safe.
then you can always just put it back if something goes wrong. Again i made sure Every line of code was the same at the beginning :GstInput. Select everything and then replace them in Battlefield 2042 profile.
since FOV is somewhat different you need to tweak it a bit. i had to adjust my main sens by dubble and tweaked the zoom aim to compensate. (Unified aim is off!). it hasn't overwritten the profile to default yet. and it feels much better then the original settings ! Kept adjusting the aim sens till it felt right to me. when done. i copied the newly edited file of PROSAFE to a safe place. if it reverts back i can just simply copy it over.
maybe this is some handy info.
Take care!