KFC, I agree with the you that a TLK would be fitting for the end of the season. It would parallel Season 1 nicely, and the past 2 seasons have touched on this. Season 2 we have Regina trying to change to become a better mother for Henry and putting him first even if it makes her unhappy (allowing him to stay with Charming while Snow and Emma are in EF), trying to not use magic.
3A we have her putting her differences aside with Snowing, Emma, Hook to save Henry from NL which ended in her giving up Henry to Emma to give him his “best chance”–again parallel to what Emma did when she gave up Henry.
As for the title, “No place like home.” I think what our characters will discover -be it Emma, Regina, Snowing, Henry, Hook, Neal, Rumple, Robin…..home isn’t necessarily a place. Home is where your family and loved ones are. Since our main character cast is so big..home is wherever they are all together. So whether are characters in NY, SB, or EF being together is where there home is and I think they will discuss that in the finale. Just my 2 cents 🙂