For G1, definitely more TAF ponies. They are my favorite set! I would love to see TAF boys, like dads from the family sets, too. And in general I'd have loved to see more variety in the boys (TAF boys, Twinkle Eye boys, Unicorn boys, Rainbow boys, etc. etc. etc.)
For G3, I'd have liked to see more unicorns and pegasus ponies. The ones we did get are absolutely lovely, especially the pegasus ponies (I love the G3 wings soooo much, so sweet looking) so it would have been nice to have a greater variety of them.