The Effort to flash out 4 Diffrent Route's Romances is quite insane with limited gain. I assume Its already difficult and stressing enough to keep up with the plot and art. Writing Romance or the infamous Love-Triangle on top of that is... a hugh timesink.
The middle option would be to let Eyvind pick 1-2 Characters as Squadmates simliar to Mass Effect or Dragon Age Origin in later Parts of the Game. That allows to write Campfire and Romance/Aventure Scene. But even that compromise is already a momumental task. Not only would Caro have to write 3-4 diffrent sets of scene for the Rest of the Entire Novel, depending on loveinterest, but he also need small changes to Eyvind:
Commiting/choosing a certain Side changes Eyvind; removes or enforces his "blankslate MC status" -> meaning the Eyvind who helped Axel got slightly diffrent motivation and priority as the Eyvind who choose to add Nauxus most of the time. THe Eyvind who makes peace is more likly to be more thoughtful and compasionate. This makes Writing for Eyvind way more complicated, cause the dialog and action by Eyvind must be somewhat logical and consistent with any kind of Eyvind you choose to play.
Therefore I prefer the writers to advance the Plot and Eyvind Story at their pace and leave the non-essential Romance Stuff and romantic SideQuest for a) bonus content or b) when the writer experience a mental blockade (temporary loss of motivation, writing/creative problems, RL-Stuff).