I guess I'm a fence sitter on this one. I love some of the "war horses" because I love the music. For example, I love, love, love Turandot especially Nessum Duram. I also love the Nutcracker. going to movies - I love the Mission so much it is ridiculous. So, I would miss these.
But I also love variety and range especially, of course, when done well. So, with Michelle - I found her skating to music that was (until later in her career) 'unique' and I loved that uniqueness - as I did, say, last year with Carolina Kostner, and correct me if I am wrong but Dai's choices (some were very familiar with Blues from gymnastics and 1990s ice dance, but I was not, and wasn't familiar with in the garden of souls). Or Jeremy's use of Muse - to me that was such an interesting choice. But back to 'overused' - Chan's Aranjuez - one of my all time favorite pieces ever, I absolutely adored his program, yet, didn't LOVE (as in over the top love, just little love) the particular cuts or version he chose.
Go figure (pun somewhat intended) - I think my point is, that besides intentionally fence sitting on this one, it's the particular version, the particular cuts, and perhaps even the particular choreography for each version taht makes me 'love' or 'hate' a war horse; love or hate something unfamiliar to me as well.