Being the parent of a gifted toddler, I definitely think they are an underserved population. Even if nothing more than additional resources available to parents of gifted toddlers would be good. Especially when you are a first time parent and don't realize things (like we never thought it strange when my son, then 11 months started playing the harmonica).
Also, knowing the things to look for in a daycare for your child and reading the signs when they are not thriving in an environment would be a big help.
Knowing to track and start a portfolio is also good advice parents of gifted toddlers should know.