First person combat eliminates the challenge of combat.
What?!?!?
When you base your combat system on player skill you limit the combat to quick twitch muscles and the ability to aim. You can defeat opponents way over your "level" by exploiting the AIs inherent, and unavoidable, limitations. With traditional RPG combat you are limited by your character stats, skills, equipment, buff/healing items, tactics, and even the dreaded RNG of skill checks/rolls. If you replay an RPG combat it never turns out the exact same way twice because of the sheer number of variables. In FPS combat you merely rinse and repeat the same basic moves over-and-over because there are fewer (if any) variables, and this is more challenging and exciting?
In PnP Cyberpunk you NEED that long list of character skills because the combat is lethal and challenging, the player needs ways to avoid combat and still achieve their goals/missions. In CP2077 there may be one or two (at best) ways to accomplish a mission without combat, but combat is always an option for the skilled FPS player. And as an option the skilled FPS gamer can always win ... I ask again ... where's the challenge?
FPS dumbass here, lemme dive into this.
First of all, the challenge of any FPS is the player's ability to handle the fight successfully. Sometimes you kill everyone and get little to no health or ammo or something else left, which puts you into a massive challenge unless you come prepared and stack up on healing items or something. You may find yourself in multiple tough fights like that in a row, loosing your stacks as a result and coming bare and vulnerable into your next fight or a boss fight, if there is one, and these tend to be more difficult and demanding.
Second, you may find yourself in a situation where you're simply outnumbered, not in a good position, or have to face a heavy unit with high-damage output. Or worse, multiple tough targets with smaller, but more agile and annoying targets dealing extra damage to you and furthermore distracting your attention (they also take ammo to kill, which is the first paragraph type of a challenge).
Third, given the fact that's all gonna be about Cyberpunk and technology's intrusion into every single bit of our lives, including combat, we may as well get enemies that are nearly impossible to kill unless you know where or when to shoot. They don't even have to be bosses or mini-bosses, they might be just heavy troops or something, which you gotta approach at a different angle that they may cover with faster movement speeds or the angle itself may require you to be put into a disadvantaging sutiation, think high-risk high-reward type of a deal.
We've seen firearms mixed with tech, and the enemies may get those, too, which is an extra layer most of their FPS titles don't get. Again, cyberpunk as a setting allows the devs some degree of freedom with the combat system and all the fights we gotta do, not like Call of Duty or something.
DOOM Eternal is a fine example, I think. They throw lots of different types of enemies at you nearly at once, forcing you to prioritize targets, consider moving around the battle area and use your arsenal wisely as the ammo can get pretty scare on higher difficulties. It all feels organic there because that universe isn't really bound by realism that much, and I think cyberpunk won't suffer from certain imagination freedom neither.
What do you suggest, though? TPS? Turn-based combat?
FPS can be challenging, especially if you want it to be and crank up the diifculty. Most importantly, it is real-time, as you said, which gives you very little time to think during your fight. I mean, if at all was that easy and came down to muscle memory or something, I doubt there'd be such a huge skill gap present in the FPS scene.
Some fine FPS combat would be great for Cyberpunk 2077, I think, especially so if the devs exploit the setting to throw something fresh and bold at the player. As an RPG, though, I don't think it'd suffer much if it didn't have the the most impressive and challenging and super cool combat system. It's gotta be fun first and foremost.