If there's no new album, assuming an outright TXF to Senjutsu tour is too outlandish, what I'd love:
Play the necessary classics (Iron Maiden, FOTD, The Trooper, Hallowed), maybe a couple of other 80s songs we haven't seen in a while like TETMD or COTD. And then fill the rest with 90s and reunion stuff. Play the obviously popular ones like The Wicker Man and Blood Brothers I guess, but unearth some of the reunion tracks we haven't heard since their respective album tours (or the 2010 leg of TFF I suppose). Imagine if they bust out Brighter Than A Thousand Suns, If Eternity Should Fail or Coming Home again.
It'd be a damn shame if their final years were spent almost exclusively playing 80s stuff. Though a full SSOASS playthrough would be awesome, since OTGDY would get a live debut.