Gacela: you asked me to take you step-by-step into what kind of novel I am writing in the Rhiannon series, as you are at a loss as to how to critique them. Think "Young Frankenstein." YF was both a parodic send-up of the horror genre and a decent horror movie in its own right. It followed the tropes of the horror genre but made them funny at the same time.
The Exile series is like that. There are true fantasy tropes in it. Paranormal romance, descent and then reclaiming one's throne (princes do that all the time, why not a princess), and a quest for exoneration (Exile in Time.) Exile's End is a little different, more like Dorothy Sayers last Peter Wimsey book, where 90 % is their honeymoon (in the book's case, the wedding) and 10% is the mystery that he's supposed to be solving. It's probably the weakest of the series.
The present one has two plots converging and both protagonists have to work out their destinies. Another trope (To paraphrase, "They Might Be Giants," 'there are no masses in New Fairy.')
So it can be approached tropically, but there is a lot of humor there. I've been criticized by one potential publisher as writing humor that lands well but interferes with the serious side. (No examples, of course, were given and that was the occasion of going into self-publishing.) This would be a concern.
One of the features is--What the heck is really going on? How will the characters resolve it, once they figure it out (if they figure it out).
I pride myself on the setting, doing what Fritz Leiber did, make the setting into a character in its own right. The same publisher thought I had created an incredibly detailed fantasy world. So if some detail needs to be added, that would be helpful. That's especially true for the series elements.
I frequently forget that the reader might be coming in for the first time with this novel. There have to be brief backstory elements, which help orient the reader but don't spoil the other novels, just give tantalizing tidbits. (Like in Jessica Jones and Luke Cage or Agents of Shield. References to the big bang-up Marvel movie where the Avengers take on alien invaders in New York City. "You're one of THEM,' is a trope.)
I hold myself to an Aristotelian aesthetics. The characters must be consistent (unless they are inconsistent by nature, and then consistently inconsistent) However silly the characters are or the situations become, there must be heroism, the noble side of the m/c's are ascendent, if they screw up, or end up badly, it must be because of a tragic flaw.
Or you can just enjoy the novel and randomly put five "Good jobs!"
Kiss, Rachel.