IMO some of these ideas make the
Goblin Archer too powerful, given his non-uniqueness, the ease of recursion, and the twilight generation in the Moria culture. For example, if
Brown Lands is a kill site, just imagine walking into four of those at once. Also, 6 twilight for 2 archery is the
Moria Archer Troop level, and I don't think that should be overshadowed too easily.
A powerful effect that might not kick in until the late game also comes at minimal cost to Moria. Discard him with
They Are Coming, and then forget about him until the moment he's needed. Not much dedication in comparison to something like
Southron Archer, who might need the help of
Dwarf of Erebor to pull it off.
I like the response ability on this one:
Goblin Archer
Minion • Orc
Strength: 4
Vitality: 3
Site: 4
Archer.
While you can spot another archer,
no player may use archery special abilities.
Response: If a Hobbit takes a wound during the
archery phase, exert this minion twice to add a burden
(or 2 burdens if the fellowship is at an underground site).
My thinking is that it punishes the bouncing Hobbits without being a narrow counter to them, while also being fair to an almost-destroyed fellowship. If the Ring-bearer is forced to use the Ring to convert wounds to burdens, the ability here won't double dip on that, or simply end the game. It seems too good against a Hobbit deck, though.
Stopping archery special abilities might also be too good for Moria archery, given that it can produce a swarm as well.