User blog comment:Psychopulse/Phineas and Ferb continues to expand, and a possible spin off involving the Fireside Girls.../@comment-2133790-20100623215219

A spin off about their children, isn't that just Phineas and Ferb all over again? And since the spin-off would be about their children, you won't get to see adult Phineas and Ferb much :P