Yep, this is such an issue around my house that even my wife *GASP* is annoyed! My son has a pretty extensive Take N Play collection and to suddenly make the new locos incompatible is a crappy maneuver on Mattel's part.
OTOH, preschool age kids with magnetic toys can lead to all kinds of chaos. I'm pretty sure the dark vertical lines along the bottom of my TV screen are the result of my son and the magnets on his Take N Play engines.
OTOH, preschool age kids with magnetic toys can lead to all kinds of chaos. I'm pretty sure the dark vertical lines along the bottom of my TV screen are the result of my son and the magnets on his Take N Play engines.