Silvan is all about allies but has less ally cards available than Noldor at the moment. It's in a strange position where it feels really powerful (with Galadriel & Celeborn running it) but there's so little choice involved in making the deck that it's not particularly satisfying to play.

Crying out for a Mirkwood twist on the Lothlorien formula, for variety and options in construction/strategy.

Following the trend the next deluxe should focus on one of the major trait of the game. We had the Dwarf one, Gondor, Rohan, Dunedain and Noldor ones. Silvan and Hobbit should get their own deluxe.

One could argue, that "The Black Riders" was the Hobbit Expansion.

Do we already know the hero for the last AP? Usually they put important characters in there (Dain, Elrond, Theoden, Erkenbrand, Arwen), who, in most cases, foreshadow the theme of the nex cycle (not true for Elrond and Erkenbrand). Thranduil could fit into the last AP perfectly, as I agree that Silvans could strongly benefit from a Deluxe centered aroud them and the North-east of middle-earth wasn't really explored yet.

I really wonder about how they could make a Thranduil hero and a parallel version of the Lórien strategy for Mirkwood. I'd really love to see it as Silvan is one of my favorite traits, but I don't know how they could replace Celeborn to be honest. Granted, he doesn't have to replace Celeborn. Thranduil could be Lore, since Haldir is way more replaceable in a Silvan deck than Celeborn, as there are many powerful Silvan decks with Gríma, Elrond, etc, while Celeborn is in all of them. If Thranduil is Lore, that'd mean he would have to be in the next deluxe. Spirit and Tactics are also an option for Thranduil, but again, in solo it's hard not to include Galadriel, and if he was Tactics he'd have to provide some serious action advantage and willpower, or he will be completely unplayable in solo. That's why I think Thranduil hero will just vaguely work with Silvan and work mainly as a general purpose all around good hero, just like new Denethor.

Silvan is all about allies but has less ally cards available than Noldor at the moment. It's in a strange position where it feels really powerful (with Galadriel & Celeborn running it) but there's so little choice involved in making the deck that it's not particularly satisfying to play.

Crying out for a Mirkwood twist on the Lothlorien formula, for variety and options in construction/strategy.

There are quite a few new silvan allies coming in the Dream chaser cycle. Check hall of beorn. But yeah, I agree with you.

I really wonder about how they could make a Thranduil hero and a parallel version of the Lórien strategy for Mirkwood. I'd really love to see it as Silvan is one of my favorite traits, but I don't know how they could replace Celeborn to be honest. Granted, he doesn't have to replace Celeborn. Thranduil could be Lore, since Haldir is way more replaceable in a Silvan deck than Celeborn, as there are many powerful Silvan decks with Gríma, Elrond, etc, while Celeborn is in all of them. If Thranduil is Lore, that'd mean he would have to be in the next deluxe. Spirit and Tactics are also an option for Thranduil, but again, in solo it's hard not to include Galadriel, and if he was Tactics he'd have to provide some serious action advantage and willpower, or he will be completely unplayable in solo. That's why I think Thranduil hero will just vaguely work with Silvan and work mainly as a general purpose all around good hero, just like new Denethor.

Galadriel's ability allows allies to not exhaust to commit to a quest on the turn they're played.

Perhaps an attack/defend version of that. Or something that adds Ranged/Sentinel keywords for a turn.

There are quite a few new silvan allies coming in the Dream chaser cycle. Check hall of beorn. But yeah, I agree with you.

I'll never use Marksman of Lorien because the art is clearly a marksman of Mirkwood.

Also because my Silvan deck doesn't use Tactics

That courier is nice though, and the location attachment is great.

I think that a nice mechanic for the Mirkwood Sylvans would be reactions "after x participates in an attack that destroys an enemy". That is what both versions of Legolas do, and it would differentiate them from Lórien's sylvans.

Also, thematically, Mirkwood elves are in constant tension because of the increasing shadows of Mirkwood, so this could represent their fight against the the Shadow.

Neutral Event, cost: 12

Response: After the refresh phase begins, exhaust 12 Mirkwood characters you control to win the game.

I'll gladely enjoy an errata extension than an other WTF pod.

A little package of cards printed with the exact wording.

And, a more fluff Imrahill hero, cause the leadership isn't much anymore.

Neutral Event, cost: 12

Response: After the refresh phase begins, exhaust 12 Mirkwood characters you control to win the game.

I would add:

Forced: before winning shuffle the encounter deck and say a type, then discard the top card of the encounter deck, if the type of that card doesn't match the type you said, remove those 12 mirkwood characters from the game. You still haven't won the game

^^