Sorry to disappoint, but Gluttony routes aren't going to be making it in for a while. Lust, Sloth, and Wrath are going to be the first Sin routes to make it in, and then once I feel okay with how they're balanced at that stage I'll start adding the other Sin routes. Gluttony will probably be fourth, though! I definitely have a more solid idea for what I want out of it compared to Envy, Greed, and Pride.