I have read posts in the past asking for this very thing. I use the MCCC mod, and truth be told, having to skill up the parents in a family I just created in CAS is tedious and time-consuming. I've taken to making sure my Sim families, once skilled, are then uploaded to my library so that if I have a need to re-start a save, I can bypass setting their individual skill set.
I look forward to seeing how this works out. This, for me, will be especially useful for the minor characters in my stories I'm telling. You know, creating that special someone for your targeted Sim, and giving them a family, so your Sim can have all the In-Laws woes they deserve. ;)