Today I was browsing through the game.dat file of Lego Star Wars The Complete Saga for iOS. As you know, 2 deleted levels from the original LSW were restored in TCS. However, I've found several mentions of some of the deleted levels from LSW 1 that weren't restored in TCS in its files. I just wanted to mention this because it seems strange that they would leave incomplete levels from LSW 1 in the game, which leads me to think that they were planning on adding some of the levels. (For those curious, I found mentions of a "Asteroid Dogfight" level, a "Boga Chase" level and a Boga character, and a level that has something to do with Palpatine. Here's proof of one of them- http://www.freeimagehosting.net/newuploads/nk2je.png )
That they're there doesn't seem strange to me. During my degree I often added code to my projects that weren't used later and then simply didn't delete it. My guess is that they used the code from the two games and combined it all to make TCS. It's what I'd do.
You might like this old thread of mine, though the image links are from the old board so you'll need to copy & paste them: http://boards.theforce.net/threads/lego-star-wars-mods-skins-etc.20133523/ Here's the unused Boga from the original LSW PC game - obviously just a placeholder model;