Yes, Mordreds Song! That is one I would really, really like to hear live (they played it in 2014 and on 70000 tons so here's hoping).
Also, yes they played Ride into Obsession:
https://www.youtube.com/watch?v=WgpsPhLf1-g But only a few times at the last leg of their touring I think.
I think they have mentioned in an interview they want to bring back some tracks (or even debut) that they rarely played live for a long time. But BG is not a band to completely give their setlist a overhaul I think. I'm expecting a few new tracks, a surprise and their usual best of (and they have plenty of material to choose from).
Edit:
This Hansi interview is pretty interesting.
https://www.youtube.com/watch?v=w8ZWkw2o4x0&feature=youtu.be&t=12m53sHe mentions the following about the coming tour setlist rehearsals:
-Guardian of the Blind
-Miracle Machine (alternate version)
-Ninth Wave (maybe new opener for some nights)
-The new heavy songs (Probably Holy Grail, Sacred Mind and Ashes of Eternity)
-Hopes to play three new songs each evening (most definately Ninth Wave)
-He calls Nightfall and ANATO songs "a pain in the ass" (mentions Battlefield and Curse of Feanor specifically, they will probably not do those).