Generally I don't like the idea of having multiple 'routes' in a game like this because I don't like the idea of missing out on content. I decided early on that I wanted to craft a game where the player could see all the content in one go, not artificially inflating the playtime to pursue multiple endings.
So to answer your question, it's likely not going to happen, all the characters will get their time to shine equally in the same playthrough.
The only exception is the 'secret route' that's been evolving over the past couple of updates, but I shant talk about that much more...