Don't be afraid to challenge yourself. You don't know what you're capable of until you actually do it. It would be really cool if you follow through with these suggestions.
But seriously, a mega ramp or a half pipe would be really cool.
Yeah I'll try to do them haha. What I need to know is how to move multiple items in the mod maker. Im not sure if a half pipe would be that great though. I have thought about it. You get a single boost and with that boost you need to go back and forth. With the speed lost from doing stalls/tricks you will stop quote soon. A mega ramp however is a better idea if you take speed into account.