Ah, but it is not necessarily bad, I mean 50% chance is good odds comparatively speaking, and one must ask, what was the goal of that scene? Is it meant to be prominent and achievable by everyone -potentially important for the story progression for example (I have never gotten it or even reviewed its code yet) or is it meant to be more of an easter egg - special scene for those willing to spend the time to try to find fringe content? (Not just the "gimme sex now" crowd not willing to spend any time in exploration) Intent makes the key difference in how good the design actually is.
I would say we are still in the determining phase of the "mystery" content, we have some calls to keep, some to remove, and some agnostic to either direction. However, this Cosmo angle makes sense (Though admittedly, I never knew the character even existed until now, so its really just "here's another character that fits this option") from a constructed story sense, and with those vines I see in the images you provided the other day, there could be some kinky options if she is brought in.

Background removal for them is on the backburner though until/unless we decide to go that route.