DW's new coaster looks amazing. I really like the integration of solid coaster design with interesting and immersive thematics. I think it shows a solid effort to deliver a good all-around experience, which is really what I'm always looking for from HFEC. As long as they think outside the box and go beyond plopping down cookie-cutter rides I'll be at least mostly happy.
As far as SDC goes for 2014-2015, I thought I had read that the park came out and basically confirmed that this will be a maintenance year with a new festival, and in 2015 they'll move forward with the GG refurb. I think the GG refurb will be fairly similar to what we've seen in the concepts. The theme won't be exactly the same as what we've seen, but the general idea of adding a few family-sized rides and expanding the area is going to pull through. They very well could use the same firefighter/fireworks theme from DW.
I don't think we'll see a family coaster yet though, but with the probable success for Firechaser I'm sure we'll get something similar soon. It seems like it makes more sense to hold off and let it be it's own banner attraction for a season, otherwise they wouldn't get as much bang-for-their-buck from the other new attractions.