Excitement points should be taken with a grain of salt. Ever notice how people can't leave the 'boring' Ferris Wheel alone? That being true, doesn't it stand to reason that a low-nausea, low-excitement coaster would also bring in the peeps?
I avoid tame rides as much as possible because the capacity is usually poor--and poor capacity means my peeps aren't paying me fast enough. Instead, I build small, very simple versions of any available coasters and use them to bankroll my more elaborate creations.
Don't believe me? Try this...build any coaster at ground level with as large a station as you need for maximum capacity. Make the first section after it a drop, then add two tight turning drop segments so the track's made a 180-degree turn. Add a small hill or two, an on-ride photo segment, whatever may fit. Finish off with a sharp 180-degree rising turn and a chain segment to pull your train back into the station.
High excitement? No. High capacity? Yes. And just watch your peeps line up for it when it rains...
-CPlaya