After playing around with WSV3 for a few hours, my overall first impression is "Gimicky". It has a very colorful interface that might appeal to some people, but being a long time IT guy, I'm more impressed by functionality, and data. What can the app/utility do for me. etc..
In general, the tools I currently use are GR Level 3 for radar, HazWX for models, and the SPC Mesoanalysis page for current obs. Though I am not currently a GR Earth user, I have been considering it.
I had hoped that WSV3, based on the aggressive pre-release marketing claims, would possibly be a one-stop shop for me, and replace all 3 tools. I just don't see that happening right now. WSV3 does not currently provide all of the data that GR3, HazWX, SPC MA provides me.
GR3, while it doesn't have a fancy interface, is very functional and easy to use from a radar standpoint, and HazWX (or even TwisterData for that matter) provide very good Model analysis, and SPC MesoAnalysis web site is sufficient enough for current observations/analysis.
Perhaps, GR Earth combined with GR3 is the right solution for me at this time?
I'm going to explore WSV3 some more today, but not overly optimistic at this point.