Dear Dnephi:
Cool idea, although I agree with the other boys: too Liszt oriented. Perhaps, you could play an all Liszt program of transcriptions. Anyway, to give this idea of "art of transcription", I think you must include other composers and, specially, other periods. Why not starting with some transcription made by Bach himself? Then, in the 19th century, you have tons of possibilities, and the suggestions made by Mr(s). Sylphes are amazing. Finally, there are interesting transcriptions made by 20th century composers, e.g., Bartok, Kurtag and Rachmaninoff, just to quote some examples.
Best!