No secret that I am a big fan of KittyScrap.
To answer your question, we have very different tastes/styles/purposes for using kits so I don't know if my suggestions will be of any value to you.
With KittyScrap, I don't want the kit to scrap with but use the kit for greeting cards, e-card decorations, bookmarks, letterheads, etc.
I just love all the nontraditional graphics (and papers) that are helpful in my other types of artwork.
So if you think you'll have a need for that kind of thing (the grandkids love to see them too) in the future, then I suggest to search through her store (now 70% off) and pick up a few kits.
And I see that a few "hidden designers" under the title "Last Month in Store" are still there. Haven't tried it yet, but if they are indeed available, you might want to browse through their stores too.