I can certainly agree with this. It calls to memory the Thief 4 developers justifying the removal of jumping by saying that it’s too unrealistic and breaks immersion for a thief to be jumping all over the place. Now that’s missing the point.
This is true, what with Shock 1 and the Thief games following Underworld. But thankfully it seems everyone else involved in those circles decided they preferred the original concept and we got the glorious RPG-sim blend back en masse, most notably resulting in Shock 2, Deus Ex and Arx in particular.Thankfully for you, maybe. And me, I suppose - I can't exactly complain about getting Deus Ex and Arx. I love all of these games but Thief is far and away my favorite, and still nothing has succeeded it :(. At least there's always fan missions.
Out of curiosity, what do you consider LGS’s direct lineage aside from the usual suspects (Arkane, Ion Storm, and Irrational)? I tend to associate STALKER and EYE Divine Cybermancy, and maybe there’s something to be said for Pathologic (its director cited Thief 1 as an influence and his favorite game, yet the games themselves are very different). And the newer Fallouts and Elder Scrolls, although New Vegas is perhaps the only one I’d count as a good example.