Most of the time, we were considering the "SP0" as a beta and never recommand it to customers. allways waiting for a SP1 or MP1, or more... :)
It is not true any more for Microsoft Products, and Symantec must run the same way ;-)
That is a good Idea to delay, but a fix for 7.1, to support earlier windows 8 & 2012 will be a MUST.
PS. We are now sp2+mp1.1, if not crashed a part of the latest MP upgrade (as I see one customer site), should be a lot more stable now with this version. !!