Maybe Golden didn't feel limited by "canon" in the same way as Taylor might have done.
Lynx, it is not up to the authors whether they feel "limited" or not, it is an ongoing mandate from the copyright owners and the Licensing Department. ST tie-ins must reflect the canon of the day. Even as a co-producer of VOY, Jeri Taylor could not have written a ST novel that deviated from established (aired) canon. Seven wasn't even in the TV series until after the "Pathways" manuscript was finished, then the novel had to be held over until it could be rejigged to reflect the change of actress and character.
Christie Golden was then asked to do a separate Seven of Nine novel (called "Seven of Nine"), using what was already established canonically about her backstory with the Raven and her parents, but when the TV series decided to do an episode based on Seven's early life, the writers
wouldn't have even looked at the content of her novel. Thus "The Raven" episode barely resembles the earlier Golden novel, and it didn't have to.
The situation was different for Taylor and "Mosaic". She wrote that
while still working as VOY's co-creator and co-producer, so she used her own backstory for Janeway, developed by her for the show's Writers' Bible and added to throughout the series, formalizing it into "Mosaic" - and even suggesting to the episode writers that they should consider the work definitive. Which they did, until Taylor left the show.
She offered the same advice for "Pathways", but she'd already left the show by then. By which time the series writers had already started to feel free to ignore some of the Janeway details from "Mosaic", and they ended up ignoring most of the detail of the "Pathways" backstories too.
It's very rare that TV showrunners have the luxury of time to read tie-in novels that are being written for 1% of the viewing audience (let alone be current with what is coming out!)
I can agree about your statement about the novel being delayed but in that case, Taylor actually did a good job in saving it by including the Kes story the way she did.
A Kes fan would say that, I guess, but I could see the joins of the cannibalized manuscript all too clearly.
As for Peter David's problems with the novels, was he about to kill off Crusher or Pulaski but couldn't due to the ongoing TNG story?
Sigh. No. Sorry I even bothered mentioning it.