My friend, you are absolutely right. Moreover, it is important to understand that in the lore of this game universe - in the games where we take control of the Luna/Raven , it is precisely the Dom route that is canon.
In the previous game the main ending was the goddess Raven ascending to her goddess status but as not crazy (which was another option), but nonetheless still having the three in one, I guess you are referring to that.
But it was not said to require being fully "dom", you could get it even having more submissive points than dom points - I did it - getting it depended on the choices made in the story, so, there is no "dom" route, just a goddess ending.
She was three personalities in one, so, could not be only one aspect, you are actually trying to simplify a complex personality and situation, plus forgetting there is more than one way to manipulate persons, and the most effective is not to force them, but to give them the idea (illusion) that they are the ones in charge even if they are actually doing what you want for what matters to you.
Effectively, the World and history are full of us men being so arrogantly full of themselves and thinking they are above their apparently submissive women, that end up being played by the women using their overinflated but in reality weak (need for constant reinforcement) ego :-D
Not by chance that if you want to learn someone's secret, a path which in average has good results is to put a woman in their bed

.
And I'll say more, in many ways, players loved Luna precisely for this firm, tough, and uncompromising style,
It is fully legitimate for you to think so, and it is indeed possible for some players, maybe even many, to share it completely, however, you cannot write "players loved Luna", because there you are preteding to know the reasoning, and to talk for, every all the players.
Given you pretend to write for all the players, it is enough one player differing to make your statement false, and I don't know if I am the only one, but I certainly make false your statement, and therefore I can state you have no right to talk for all the players.
In my case what I liked was the setting, the way Frozen Synapses got around some potential limitations, but even more, the fact that Luna could have many different choices and could have some complexity as character.
That is specifically linked to the fact that she was
not constrained to be, to use your words "firm, though and uncompromising" all the time and in all situations, but also have doubts, like would be and is normal for a person in an identity crisis, and be remissive, depending on the situations and contexts, something that to me made her and her story more realistic, even in the limits of a game.
which so favorably distinguished (and distinguishes) her from the hundreds of “happy sluts” FMC present in other AVNs with female protagonists.
Aside hte "happy sluts", Luna, and Luna Reloaded, are supposed to be an adult ame, not an Adult Visual Novel, hence the bigger variety and choices.
So listen to your heart, not the words of those who try to justify weakness and submissiveness, which was never characteristic of the formidable immortal goddess Raven, with whom we (Luna) merged in the canon BadAss bitch finale of
LFFG.
Do you realise that people like me who are not followers of your Raven religion :-D are actually the ones saying (check my posts), that is perfectly fine for you and the others that are your line of thinking to play the game and see it as you prefer, while you and the other zealots are the ones that flame against, and want to bash, anybody that is not aligned to you ?
Effectively, in Luna reloaded I am myself playing both the "forgiving mother" and "vengeful goddess" in parallel.
I can see you and others are really taking the "goddess Raven" as if it was a real religion, in which you are the absolute zealots :-D, I wonder how long will take you to launch a crusade to impose the Raven goddess religion to the real world :-D, have you already decided which of the real churches you want to follow as model ? :-D
This all story is becoming quite funny from one side, though from the other, if you poeple are like this in real life, it is also worrying for the present and near future of the world, and I mean the real one, not Luna's one

.