have they considered late releases of WIP vids? Ie., maybe make WIP vids public after 3 months or such? Would still maintain the insider status of "up to date on latest developments" that patrons are paying for, but would also maybe allay some of the public worries about milking. The public are the ones who might potentially sign up to patreon and replace the other ones who are slowly dropping out after all.
Like a sneak peek would kill them?
It does make a certain amount of sense that it's a long update. Unlike other girls who've had their routes completed, Gomira basically had zero character development prior to this update. There's one scene in a dungeon, we don't know why she was captured or if she committed a crime, we don't know anything about her except she apparently isn't against hooking up with humans and really enjoys givin' a beej. Aside from that she is tabula rasa. So ALL that characterization still has to be developed. As far as Lassie is concerned he's never even met her; shit, the mad lad doesn't even know he blasted in an Orc throat. For all we know Lassie will turn out to be racist against Orcs and will have to get over that before he comes to desire her. There's a lot longer distance to go from where we are to him and Gomira getting freaky again, than there was between him and Myrtle or Rose doing the same.
Note that I'm not saying this justifies a two year dev cycle, mind you. But it's a factor to take into consideration. If they were gonna do Gomira justice so that her route has just as much feeling and depth as the other girls', then it was always gonna take time to make.