@karasutengu Crest of The Stars to Banner is kind of like Firefly TV to Serenity in that it established the universe and main relationships, giving the next property a place to start but leaving already existing fans coming in with already established events and characters continuing events and while not making it impossible to follow it won't give new viewers the depth to understand fully events or impact.
Or like watching Star Trek 2 The Wrath of Kahn with never seeing Star Trek before. You have to pick up the setting and interactions on the fly, thus missing the same emotional impact longtime fans felt at the end of the film.
Though in Star Trek 2's case those just watching the movie miss the experience of long time fans attempting to head cannon Kahn remembering Checkov's face when the character of Checkov wasn't in the series when Kahn appeared.