Heheh, I'm glad you're putting so much thought into this! The prejudice against boars (and others as well) will definitely be a major theme in Jehu's route especially. The themes will absolutely be explored a bunch, as well as the differences between how Rob plays to the stereotypes (more or less embracing it) versus how Jehu plays to the stereotypes (more or less denying it). I'm real excited to write all that fun stuff out! And there'll definitely be more Rob content ;)
That said, I can also say is that Rob definitely won't be getting a route of his own. An ending with him isn't out of the question, or perhaps some side-stories or special, alternate scenes if I can reach my first stretch goal on Patreon... but it's similar to why there won't be a MC's Dad route. It's because of my overall plans for the plot, not necessarily about the character in question! If that makes any sense, anyways. Those 5 (Jehu, Shen, Alan, Jorge, Paul) in specific are the routes for reasons that will be revealed... later on down the road :>
I hope you stay tuned!