Yes, the predator is supposed to be sneaky but the game is balanced around current light levels. Of course it would help the predator a lot, like giving the marines a smartgun (Alien movies) that can automatically track the predator even in stealth, that would also help the marines. Does not mean its balanced.
95% of games end with dead predator or dead FT, its not about being obsessed, its about the current meta. I have 2/10 on my weekly after a ton of games because they game does not go that far. Predators wipe the team or the team wipes the predator.
Yes, doing the objective sounds cool and all but its somewhat hard to do that when you have the predator on you. More so with how you want it giving the predator even MORE stealth and even MORE of an escape when he charges in hopping to floor the entire team in melee (yes, if its dark its harder to follow him). It would make it more challenging for you as FT? Predator players keep saying this… Translates into, make it more easy for me to destroy the FT.

