sims 2 expansion paks ideas

i need ideas for the sims 2 web site i would like to give them ideas for the game

i have one idea but it might take as much mb as the first original game that is sims 2 without the expansion paks. my idea is an expansion pak that lets you create amusement parks even a advance rollercoaster designing application like ultimateride coaster deluxe game

also like ride creator system would help to but i think it would be way too hard to create your own ride except for rollercoasters. rollercoasters are easy to build but developing new types of rides is like talking crazy so i need help for this idea can anyone help like find some kind of program or game that could be used for this idea

NOTE: this is only a idea for the next expansion pak for sims 2 web site

if you can help create ideas it would be very helpful that you do that

thank you