You have my major support with this idea m8...
And here are few suggestions from the lore side of our beautiful Lady of the Light:
First, if you hadn't played BOTTA mod of BFME2 check it out ( i am not comparing), Galadriel per say is not very well done mechanically but there are interesting ideas about the hero model which i would like to point out but can't find pictures or other data to display... (I will reference what i mean at the end)
Let's talk appearance.. That non CGI seaweed form that you showed is gorgeous.. Perfect one might say... but (I'll try not to get to deep into the lore but try to understand where I am coming from with this) I would prefer that non CGI seaweed form for her to have when she takes the ring, and perhaps the current model of "Dark" queen to be the appearance of the stance she changes into willingly...
Explanation: Galadriel is the Lady of the Light. I dunno why it's generally thought that she would go Dark by taking the ring (bear with me
).. She has enough will power to contest Sauron and with that in mind she would be able to utilize the One ring as she would wish.. It would enhance her power.. The One ring would in the end game deceive her of thinking that her goals justify the means of her doing bad things but it wouldn't be as obvious as going full Dark... And that is why I adore that non CGI photo that you posted.. It gives a feeling of her being her with just little subtle bits of darkness.. (check this out for better understanding of what i mean..
https://www.youtube.com/watch?v=4dnhIWdW5_8&t=5s )
On the other hand.. These are my thoughts on the form that she takes in FotR and BotFA: She is powerful by default, no doubt about that, but I feel like, that in situations that require more, dire moments (like at Dol Guldur), she just channels all the power she has at once to deal with the threat causing her to appear Seaweed like because of a lot of power and exertion.. That is why she drains rapidly as you yourself stated..
With the One ring she would wield enough power at all times so she would never have to exert herself to that extent as without it (I'm not saying that seaweed form is more powerful.. It isn't.. Just is harder to sustain and shows the short burst of power).. That is why I feel like the forms are more suited this way..
Abilities: As far as this goes, I think that you pretty much nailed it to the spot.. I agree with not putting earthquake (It'd be OP) but I'd like to see perhaps 50% dmg boost to auto attack against buildings (over the initial boost to auto attack in seaweed form) and her range of auto attack lessened (not to melee range) compared to normal form but with a slight knockback (like the original model in BFME2 )..
The mod that I mentioned (Battles of the Third Age) has Seaweed form and her manual form switch already, and her "Dark" queen form when equipped with the One ring, so I really recommend taking a look for inspiration.. It's not so well done in other aspects compared to Edain mod..
She also has one ability called "White Blast" or sth, that would very well fit to your Wrath of the Elven Queen.. It is a targeting ability and when casted it blasts the initial enemy with high damage and blasts away surrounding enemies dealing moderate damage... Pretty nice animation for it also.. (In that mod she has that ability in normal form though I'd like to see it in seaweed)..
Finally, ability names:
I would name form switch "Wrath of the Elven Queen" (you may make it so that she drains power or just make it so that duration is not long and that cooldowns may be used once per form switch, and that last ability ending it prematurely)
1st ab: Eerie sounds a bit silly (
not worthy enough of our Queen if you get me) , I'd go with sth like "Latent aura of the Noldor" referencing her strong elven heritage or "Radiance of the Two Trees" or just "Aura of the Two Trees"
dont have it that allies get the debuff also plz.. Leave that for Ring form..
2nd ab: Name it a blast of some kind.. Dunno.. Perhaps "Light blast" or just simply "Blast" (as it is a spell with the single intention to damage and blast.. it would feel epic just naming it "Blast")
3rd ab: (if you don't use 'Radiance' for first spell) this one could be "Radiance of confinement".. "Light of the Earendil star" (make it so that it works on every hero except ring heroes, cuz she has more power than anyone else honestly)
4th ab: This could be "Wrath of the Elven queen" as well , "Sterling power of light" or sth..
One more suggestion considering general model of Galadriel as a hero in this mod.. Give her most of the abilities at the beginning (if not all) just lessen them accordingly and make them increase with each level.. She is one of the oldest beings on middle earth so having her with 1 ability is kind downgrading much.. And for crying out loud give her a heal.. She is almost literally the incarnation of light in Tolkiens middle earth.. let her heal allied units with auto attack (aoe, so 5 soldiers i. e. , and when healing heroes to be a single target heal but a bit more potent) in normal form when not in combat, that would be dope..
I rest my case with this.. She will have enormous skill set (true) but with proper scaling that can be balanced easily...
Btw, I could probably do most of the things about this new form myself in a day or two (not much coding needed, just copy/paste and some stats changes) but some1 needs to show me how to edit Edain
P.S. Wal, it's your fault this is a bit long.. You inspired me greatly ^^