I don't know what If You Had Wings was, but I remember an (I think) short-lived attraction called Dreamflight, sponsored by Delta. I recall it was a pretty lousy attraction, barely more than a commercial for Delta. However, I remember two enjoyable things about it: one, there was this spiraling strobe light you'd go toward that would give you a feeling of turning nearly upside down, despite no motion other than horizontal; two, a very optimistic catchy little jingle. I think incorporating theme songs into attractions has kind of dwindled. "It's Fun To Be Free" from WoM is another forgotten gem. Many like "A Pirate's Life For Me" are certainly not forgotten, but it's hard to think of any great new ride songs. Did someone decide this kind of thing was corny, or are the Sherman Brothers just irreplaceable?
Anyway, Dreamflight was only an A or a B ticket, but I have more interest in re-riding it than Mission: Space. All that technology, but little creativity.