I mentioned this in a post a while back, but SIGT needs something more than just PoS. PoS has been done before, and masternodes probably won't be enough. Many coins have their own take on balancing staking and mining. See: Ark, Decred, Neo, etc. Otherwise you're probably going to be holding onto PoS coin #34 that will probably go nowhere.
I would be very suprised if we do not get more than this POS. The developers just needs time. They have jobs outside signatum, it is more a hobby. But without a ICO that is how it is. And i would prefer this way. Also when you add how little most ICOs do in 3 months i would give the devs thumbs up on development.