I know the hardcore lovers of 9V will always love 9V but I do like the PF. Its easier to setup and control and its safer for my little nephews to setup and play with.
What I would like to see is a couple of additional power function items, here are my examples
- A train horn device / engine noise making, it would be great to be able to set off the horn every now and then and have a bit of a traditional steam engine noise going off as the train goes around.
- Addition to the LED lights, 4 or 6 light box, I love lighting up the inside of the passenger cars etc
- 'For the love of GOD' an electric switch for the train tracks, this could be done easily.
- More than 4 frequency controller and receivers, doing that would allow to have 3 or 4 trains running as well as controlling track switches and other items, I would love to automate my train doors, make it stop, open, close them, it would just add more play-a-bility
- Non contact charging, it would be awesome to simply park my engines in the shed at night over a charging pad or next to a charging module, ready for another days play.
Any of these items could also be used in other sets which would help it be cost effective for LEGO to do.
Anyway, they are just a few thoughts.