I'll join the echo chamber... It's been my plan since deciding to become a founding STH that I'd stay in it for 3 seasons but then drop my tickets if there weren't definitive plans for a SSS after the third season (or at least a lot better communication than there has been thus far). It's a long year, so who knows. I had my hopes up high when we received the stadium survey, but it's been crickets since...
Completely disagree that dropping STH for lack of a SSS is a plastic move or removes our standing as fans. I think the real plastic move is sticking blindly with the ownership. They want my cash and my "membership", then they better supply me with some information. If no fans ever changed their actions or purchasing decisions based on this kind of thing, owners and front offices would never invest more money than the bare minimum. If another 2,000+ STH drop after this season, you can bet the ownership and FO will be looking at SSS possibilities a lot more urgently than if the opposite were to occur. The beauty of the US is that what makes soccers growth more difficult, endless competition, also makes it a fans' market. If owners don't invest the way they should, then there are plenty of other sports and entertainment options out there. Give me a good product or I'm not buying.
At the end of the day, I don't have an endless pile of money (not even close), so while the club means a lot to me, I can't stick around forever hoping the club eventually gives us what we want/deserve. 3 seasons (plus all the lead up time before the club started) is plenty of time at least for a solid plan.