Ok now all the other classic (ie pre-ca. early 2k10s) FMs :-) My tentative suggestions: Rocksbourg series, L'Arséne+Emilie Victor series, Calendra series, and as special bonuses Ruins of Originia, Dark Messiah, Dancing with the Dead & more...

Only the last stretch of the approach is linear, the vast majority of it isn't.

This mission may be a guilty pleasure of mine but I respectfully disagree. The level itself is actually pretty complex and I discovered that it's best (and probably meant to be given Garrett's situation and the slightly soured relationship with his principal) played entirely "revenge style", ie using the means you get that are actually very accurately dosed to be just enough (on Expert) to dispose of ALL enemies in the level in any ways imaginable in the Original Ghosting ((C) Civvie) style ...

BTW if you're into the burrick/horn trope try a nice FM that (partly) explores it - Forgotten Tomb.

If one would be really nitpicky it's not entirely undead (souls are a different matter altogether) so you may "do want you're blackjack because those burricks won't boink themselves"

?? Guys it's definitely a some version of TFix thing, I still have TDP to this day as my main installation and I only additionally install what is absolutely necessary to make it work (and play FMs) on a "modern" system, ie afaik TFix.

Rose Garden is not necessarily a good culprit here, I would say it's just as tightly packed as it gets for the amount of gameplay on offer. The coup is that it FEELS that way (ie big) at first by design choices. But yes, the prime notorious examples for unnecessarily big just for the sake of it are many and numerous. Looking at you, Feast of Pilgrims.

7.8 is actually pretty high for an older mission, older stuff is typically underappreciated here and goodies can still be found even in the 6-7ish range (while with most recent ones it's tendentially the other way round, or the law of current bias)

This is subjective but yes, AFAIR (spoilers galore) the woman in BF is the girl from EV, and EV explicitly takes place by in-game information as a side story right after L'Arsene, and both the stories (fleetingly) connect in EV in that we also meet L'Arsene there, so all take place in the same universe (in the above order on the timeline).

It can actually be counted as part of the (loose) L'Arsene series (L'Arsene, Emilie Victor, The Korrigans, The Den, this) by the same author that follows Garrett's tribulations with the key protagonists. L'Arsene is author's first but all are arguably classics. Special recommendations: Emily Victor and The Korrigans.

The Fireshadow is added by TFix (as many other things, such as the "little big world" section in The Sword) also to the original (Dark Project) version of the game. It is of course an improvement but in a way it is a sad aspect that the original version of the game "as it was" with all its little differences (both gameplay- and engine-wise, sometimes intertwined ) is not playable on modern setups in any way anymore. For example, how many players today know that you could get enemies drown ...

Interesting, but I am unsure if this deserves a straight unequivocal 1 - I've seen much worse that clearly does. This to me has its bizarre charms of the very early or "naive" fms.