My comments:
NR:
The header promises some mage / patience support.
Aretuza Student: She fits perfectly into the whole archetype being a good target for Tissaia and Aretusa Adepts.
Tissaia de Vries: I would call her the Eldain of NR. She can be very powerful if she has many valuable targets and very bad if you face a short round or a removal focused opponent.
Her main targets are:
Gerhart of Aelle, Aretuza Student, Ban Ard student.
Cards which might be a consideration to include:
Yennefer: Conjurer (Synergizing nicely with those Cintrian Spellweavers and one additional many damage might be a consideration)
Istredd: If you go for a Snowdrop / Pincer Maneuver strategy
Margarita Laux-Antille: One additional lock is also valuable
Síle de Tansarville: 2 dmg
Cintrian Spellweaver: They are to my mind also core in mage decks as they benefit from both spells and mage units. (1 dmg)
Ildiko: Can be a consideration (+5 boost) and zeal for the Spellweavers)
NG:
"Infiltrate your enemies’ ranks with double agents and strike from the shadows."
=> Honestly I expect either some spy support or a complete new archetype with double agents. Strike from the shadows indicates card which are connected to some surprise. Maybe cards appearing from the deck.
SC
"Show those arrogant dh’oine why they are no match for Elven mages!"
Few to find out from these words. Probably some more special cards and elven mages interacting with those
SK
"Answer the call of the Sea and deliver the offering it demands."
Probably some self wound support. E.g. cards which benefit if other cards get damaged or maybe even killed. Also expect more rain synergies
MO
"The Sabbath is in the full swing! Behold a very special guest joining the fun. And she brings presents too!"
More Sabbath support. Would expect a summoner if Sabbath is met
SY
"Rules of the trade are simple: Pay your tributes, extract confessions, collect bounties."
Some tribute and bounty support. Expect confession to be a new keyword.
Neutral
Dwimveandra
Currentlym I am not at all convinced by this card.
Her Melee is very slow tempo and conditional. You need her, the scenario and 3 scenario enabler. Maybe she has some use cases in Masquerade ball and Siege but I do not expect her to be seen her in competitive play as you need to be lucky to have drawn the cards you need.
Her Ranged is easier to use. Espcially with
Salamandra Hideout and Stygga Castle I see strong value.
If you go for this card you most likely have at least 1 scenario and 1 location + tutors in your deck. Probably we get more location (with maybe stronger order) which might be supporting her.