I had an idea that can really show some promise with the RoflCopter, Customizability
First of all: Maybe make the Soi sounds an option of multiple sounds for the Propellers, and maybe different start up sounds?
Secondly: Maybe be able to customize the words and colors of the RoflCopter? Allowing the user to make their own roflcopter of their own words.
I feel this should be accesible to everyone, making it a user preference, One person can hear another person's roflcopter going Soi Soi Soi, where as the other person can read "Rofl" everywhere on the roflcopter, except for the back propellers, those are "LOL"
Why have the creator make a player mandatory decision, when the creator can allow freedom of choice? Right?