Personally, and this is just my opinion, so please don't proceed in flaying me alive for this... I'm not up for seeing them in the caves. If there ARE any legendaries, I would rather see them in the field. For three reasons:
1.:The caves are functioning more-than well. I spent 30 fsp's worth of gold, and got ABSOLUTELY NOTHING - not even a common item, even less a potion or anything usable. Except for experience of course - telling me never to attempt this again. I only had two buffs on: FI 1150 (distilled) and reckoning 175, and deactivated distil just to be sure that only FI would be boosted. Yes, I'm aware of the reckoning pot and the epic FI potion combination as an option - sorry, I didn't have the resources for that. But if this is all a good level FI, reckoning, and nearly 6.000.000 gold can get me... thank you, but no thank you. If this is how HCS would put them in, I'm not sure that it would be only me feeling something like "Hey, here are your christmas presents! Oh, wait, you've been naughty, so I'm taking them back, but hold on a second! Don't cry! You can still LOOK at them!". I personally would rather not see any LE's all together than have them in the caves. On other occasions...I don't mind. But at least, please not on Christmas.
2.: Tradition. Before anyone describes how "important it is for the economy", "blablabla", I'm well-aware of why it is generally considered a "safer" option to create a gold sink in the forms of LE's. And also, I'm not aiming particulary for prices to drop(I couldn't really care - I've earned enough fsp to be able to afford even ff'ed sets - instead, as someone who has recently returned to the game, I would simply like to experience the thrill of the hunt. As it was long-long ago, when I could, after quite an effort, finally get my hands on 2 personally aquired Mancrusha pieces (had to buy the rest though, but it was amazing to fight LE's). I'd be happy to re-live that.
3.: Too much gold pouring into the game? Well, to be honest, I don't have a full view of how many fsp's will also be coming in during christmas via supporting the game and getting presents for others - and I know most of these point have other purposes than to be exchanged for gold - But I'm sure that fsp sellers will be able to hold prices at around 210-220gold/fsp even in relatively bad scenarios - and in a few weeks, prices will be back to normal anyways. The 48 hours of the event will be a time when mostly everyone will try to get rid of/or bank gold, but even if the "economy is shaken", I doubt it would be too bad.
All in all - I would rather have the LE's in the realms or no LE's at all. I understand this may be an unpopular opinion, and I also expect the leading economists of our community to harshly challenge my views in a throughoutly detailed explosion of counter-thoughts, but I don't mind. I was only expressing my thoughts (or one could say, wishes lol:D) - I meant no harm.