Hum.
TR is such a fantastic prog rock song, such as symbol of DS' apogee, that I would be sad that it would be dropped.
On the guitar part TOL is probably not more difficult to play than TOL; on the vocals, though, TOL is very fast while TR is rather slow. I guess Mark feels he would be out of breath.
13 minutes is not short for TOL - Alchemy is 14, 91/92 as well (although the intro in shorter)
I want both TR and TOL !! Like in Alchemy !