And in a world like #2 all fighters are apparently rogues as they are the only ones to employ basic combat tactics?
I don't view what I described as the full set of basic combat tactics, and I don't view saying Rogues are good at that subset of tactics as the same as saying Fighters cannot do them as well - just not as effectively as the rogue, who specializes in that subset of tactics.
I propose a world #3, a world where the rogues is a opportunist who balances his lack of direct combat expertise with a lot of skills (yes, including anatomical one)
OK, so justify that part. The anatomical one. What skill is it? They should be good at healing too, right, since they know anatomy so well? They should be able to identify damaged corpses too, since they know anatomy so well? Track based on the anatomy in footprints? They would be more likely to have a higher ability score in whatever is connected to that anatomy skill, right? Rogues with a higher ability score there, should be better at sneak attack than rogues with a lower ability score in that, right?
You see how this isn't making sense, I hope.
and who, if he is good, can always find a tool in his vast arsenal to do something, be it direct combat, indirect combat or support by being able to use pretty much every magical item that exists or by otherwise fulfilling an important role in the party with his expertise with non combat skills.
This is a version of the game with exceedingly few magic items. Should they change the entire set-up of the game in that respect, to help the rogue? If not, what then? And, why is this unique to the rogue, given magic items are usable by many classes?
That is also a world where a rogue is not exlusively concerned with how much damage he can do by stabbing people as that is only one small part of what happens.
Strawman. I didn't say that's all they are concerned with. I am talking about an ability that does extra damage, and how it works. Of course rogues can do lots of other things.
This whole issue is anoter "combat as sport" vs. "combat as war". If you want balanced tactical combat like in an MMO or competitive tabletop, then yes.
This is another strawman. I am not tlking about balanced combat, I am talking about what makes more logical sense for the ability and how it works.
I am asking why you think "anatomy expert" makes more sense to you than the other view. That has nothing at all to do with balanced combat and MMOs. Indeed, given the view of "they need to work around this limitation imposed by the rules rather than logic", which seems to me to be the perspective of the anatomy-expert-fans here, looks a lot more like an MMO issue to me than the other view.
Having sneak attack immune creatures creates an imbalance. But imo, that is not how D&D, or any RPG, should be played and while being supported should not be the benchmark for them.
You should tell that to someone talking about balance issues then. I didn't say a word about it. You seem to want a rogue who pours over technical medical manuals on anatomy in his spare time, but who is also incapable of applying that anatomical knowledge in any way other than in combat. That doesn't seem like a compelling explanation to me. It might seem like an MMO though.