Maybe you should change the controls so that left analog controls moving forward, backwards, and turning while the right analog controls pitch and strafing. N64 old school.
That’s really odd considering pretty much every game, including platformers, has left thumbstick for movement and right thumbstick for camera. Even Nintendo does this.

It’s a FPA, First Person Adventure. The focus isn’t on shooting things. That’s like saying Mass Effect is a 3rd person shooter when it’s mostly an RPG. Or that Brutal Legend is an RTS. Or that NiGHTS is a flight sim.
Just because it has the most basic element of a genre in the game doesn’t mean it so easily fits into that category. That kinda implies that we can’t mix anything together because we must shove them into an already existing label.

I don’t see how you can easily get lost unless you spiral out of control or teleport randomly. If that annoyed you then I don’t see how you could have survived the last boss in Star Fox 64, considering the room he’s in is just repeating patterns with no point of reference. In fact, a lot of games from that era did this.

I grew up on those games too, I didn’t have trouble jumping into FPS. Although you can’t really count the Metroid Prime series as an FPS.

No really sick, I don’t get motion sickness easily. I just can’t get my bearings, in Metroid Prime 3 for example I kept backing off a cliff during a boss battle, I just grew up on platformers and games where you can actually see your character.