Honestly, I was joking and think, the matter of Sauron's "elf-dar" is a red herring. We know that the presence of big baddies in proximity was felt by all creatures. Nazgul are known for sending even big formations into panic, while the proximity of the Balrog even Aragorn, who was able to sustain the terror of five Nazgul, as well as Legolas, who later successfully shoot a Nazgul over the Great river with his arrow, have got unwilling to raise their arms. Even Barrow wights paralysed and confused those in their presence.

It seemed to me, big Goodies produced some effect on baddies too. Orks probably hated the aura of Loth-Lorien and were unable to fight there properly. The sight of an elf-lord in his wrath contributed to the panic among Nazgul at the Ford. Gullum naturally suffered of everything made by elves (even elves of Mirkwood).

I am not saying Sauron could search ME with just gazing from his Tower, but let's not forget that both Galladriel and Gandalf were able to fight his mind on a great distance. And if Galladriel's location was known, Sauron could hardly have expected an assault from Gandalf the White sitting high, looking far... ))))

But the real matter was the travel through Mordor. Hobbits were extremely capable of stay unnoticed when they wanted so. A presence of an elf-lord in Mordor could have been disclosed easier.

The other thing that could have come to Gandalf's mind (we cannot know) was that as hobbits were not known to the folk of Mordor, it would be possible to send the enemy on a false trail, as it happened in the end. If Pipin and Mery would have promptly entered Minath Tirith, the enemy would have located the Ring in a wrong way.

I'd disagree with some of this as an alternate scenario.

1) Lorien, Rivendell, the Shire, and particularly the Lonely Mountain and dale would have been unaffected, and with Sauron possibly being destroyed a few days earlier with Gandalf along to hurry up Frodo towards Mount Doom, Eriador and Rhovannion would be even less effected by inroads of Sauron's forces---held back anyway at the siege of Erebor.
2) A few more days/weeks of Saruman burning the fringes of Fangorn would not have affected most of the forest, have even more enraged the ents.
3) The Ents would have had an even easier time at Isengard since the bulk of his army would have been further away, occupying Helm's deep and far to the East around Edoras.
4) While it's probable much of Rohan and also Minis Tirith would have been occupied it's quite likely Aragorn would mhave led resisitance fighters into the White Mountains (through the secret passages alluded to in LoTR).
5) Given the resistance put up by the Rohirrim even during the Long Winter (see Helm Hammerhand) there would probably be resistance on both sides of the White Mountains.
6) It's not necessarily a good thing to be the king if you're Grima Wormtongue and scheme to marry Eowyn. Best not doze off, GW. :rolleyes:

In short, a largely intact north, a south (Gondor and Rohan) with bad loss of people and material, but recoverable---and an even more heroic (for Gondorians) King, sort of like Alfred the Great after Athelney.

Yes but I believe that Elves were said to be even better than Hobbits at moving without a sound and being stealthy and all. There are many stories from the First Age involving Elf-Lords that strengthen this view too. Plus, as I said, an Elf of Rivendell would have many other skills, in fex. fighting, magic, geography, language, lore, woodsmanship that could've been invaluable, skills the Hobbits could not match at all.
Hehe that thought struck me too, that they were brought along as, well, bait. Sauron and Saruman snapping their jaws at the halfling not realising that there are several running across their lands. Would seem a tad cynical of old Gandalf though...

But you know, I'm really just playing the devil's advocate. This is supposed to be the Hobbits' story, I get that.


What, skip sense, I don't get it :P

Well, me too, or, rather an elven advocate, who just is desperate to find rational arguments defending a High Elf from being accused of cowardice. :)

I think your arguments are absolutely valuable. But I also believe that the nature of Glorfindel's mission in Middle Earth was more about guarding the Last Homely House rather than marching on Barad-dur.