...while humor and renders were great, story and relationship with girls didn't move much.
It's certainly not a pack for trying on their part. However, Kindra definitely feels like the "canon" LI similar to Cece from Leap of Faith just due to how Kindra has been set up during these early chapters. She's a familiar face that Ava (I believe that's the mom's name) preferred over Cassie, alongside with never having a relationship with him as opposed to June.
I believe June is more so meant to contrast Cassandra's personality as we see two entirely different approaches to how both girls handle their emotions with MC. I don't doubt both won't end up being LI's in the future - especially considering the character development with Cassandra (monster!) - but they reflect a choice made by the MC rather than the player.
As for the INK girls, they all have unique character arcs that I hope gets explored more in depth. They're definitely being progressed at a much slower rate than Kindra, but they bring unique and fresh personalities that make them loveable to a broader audience. I hope they get further attention moving forward, but I wouldn't doubt Digi forgoing romantic content with them in an effort to cut down on development time.