Currently, SoaSE:R is #7 on the top sellers on Steam.
I think this speaks good for the game's popularity, I believe there is a rekindling interest on the space 4X genre, as the surge in similar titles this year shows. In fact, the other titles may be even raising the awareness of SoaSE:R and helping its sales.
CONGRATULATIONS!
Hope this fills your coffers enough that it makes Sins 2 all the more likely. 
