I don't know if this counts as off topic, but I for one am hoping for some street projects next test. I got a big ole bag o'cherries just itchin' to be made into fruit saaaaaalaaaaad...
They may wait for certain triggers. Like having a certain amount of folks who have learned Engineering so blocks can actually be made. Don't know. They are also may just be saving projects for launch (seeing as they might not have a solid idea of how many people they'll have... Pacing may be a consideration).