It seems likely we are to get a new FAQ at some point, and since there is nothing more likely to provoke bitter disagreement than the restricted list, I thought, why not start the festivities early!
What may be more interesting than the usual what-should-be-banned debate, however, would be to revisit what's currently on the list, and see if any are candidates for coming off.
Itinerant Scholar: I have no idea why this is even on the list. Basically doubling use of a domain - at the cost of a cost 2 character and the use of a lesser domain - does not strike me as game-changing, particularly given that other factions have very similar domain refresh abilities. I would consider this a candidate for removal from the list, and Miskatonic could certainly use the help.
Things in the Ground: I am under the vague impression that this is a critical card in some exotic Yog combo; maybe in a milling deck in combination with Curse of the Stone? It is hard for me to see how it's game-breaking, particularly given that it has the same effect on all players. The main argument I can see for keeping it restricted is that the milling it provides is too cheap - but I don't find that to be a compelling argument, given how few tournaments have been won by milling decks. As such, I think this is also a candidate for consideration for removal from the restricted list.
Diseased Sewer Rats: The argument made against this card is that it provides wounding too cheaply and too early in the game - and I agree. Say, I wonder if any other cards meet that criteria . . . also, it's neutral, which makes it especially problematic, as it's easy to include in any deck. Keeping it restricted makes sense to me.
Negotium Perambulans in Tenebris: The main issue I see with it is that there are (currently) no ways to remove Conspiracy cards, and it requires a very specialized card (Foiled!) to counter, so it's very difficult to deal with. Cards that create serious problems for a wide range of strategies and that are difficult to counter directly are prime candidates for restriction, so I would argue keeping this card where it is.
Descendant of Eibon: I don't find this to be as compelling of a card, but a lot of people here whose opinions I respect do. It can, under some circumstances, be a very cheap character to get into play or to return to the hand, so I think keeping it restricted is a reasonable choice.
Nyarlathotep: I can see this card causing considerable headaches for multi-faction decks and for decks that rely on fine-tuned combinations of cards . . . and I think that's a good thing. Perhaps it does that too well, so I can see both sides of the argument for keeping it restricted or removing it from the list, although I lean toward removing it from the list.
Guardian Pillar: I don't see this as game-changing as much as I see it as too cheap for what it does - an amazing, hard-to-remove blocker - and too easy to include in a deck given that it's neutral, so leaving it restricted makes sense.
Doppelganger: I do not see what the issue with this card is, particularly given that there are cards that take direct control of a character, which is arguably much more powerful than simply making a copy of an existing character (while the opponent keeps control of the original). Cost is not an issue, as it simply reflects the cost of the copied character. And it's limited to non-unique characters. It does bounce back into the hand, but only if the copied character is destroyed. I can see removing this from the restricted list unless there's something I'm missing.
Khopesh of the Abyss: Speaking of too-cheap wounding, this is it right here. I will set aside the debate over restricting it versus banning it, other than to say that the fact that there's a debate says something about the power of the card. I've actually found it possible to deal with, as long as I know in advance that it's out there and can make an appearance, but still, an enormously powerful card that that has changed deck-building, and as such is a prime candidate for remaining in the restricted list.
Initiate of Huang Hun: I'm not sure this card is as powerful as it's been made out to be. It is a solid card for Silver Twilight, but not game-changing in my view. It's restricted to the Operations phase, and basically gives you an untargeted bounce for a cost of 2. Good, but nothing to write home about. Lord Jeffery Farrington is much better in my view, as he's targeted and has better icons, even if he costs 3 - and he can be recursed with only a little bit more effort than the Initiate. I suppose I could see leaving him on the restricted list, but it may make sense taking him off - particularly if another core Silver Twilight character gets added (say, I wonder who that could be? hmm . . . )