I'm not sure if people are up on the claims that Nintendo has abandoned their plans for Directs for the foreseeable future (presumably until they get a better handle on the reshuffling of their plans), but if there is a GS in development and if it is to be shown sooner than later, a trailer being randomly dropped instead of being featured within a direct would be a definite impediment to GS's viability.
It's the kind of title more reliant on the eyes normally drawn to a direct, not exactly a title which will independently attract ample attention regardless. Its notoriety isn't that high, and, unlike, for example, Paper Mario, it thriving without a stage in which to provide spotlight is fairly dubious.
So personally, if a GS is in the cards, I wouldn't mind waiting until Nintendo gets back on the rails with their directs before showing it off so as to ensure a more profitable reception, and therefore a more assured future. Even if that means waiting longer.