I'm so glad I contributed 1 out of the 24,580 units sold
It's kind of odd that they rarely perform songs from sakura's era these days, the only real exception is Caress of Venus, and to a lesser extent Lies and Truth (2003, 2006, 2007). Not counting L'A HAPPY NEW YEAR, flower was last performed in full in 2003, while Vivid Colors appeared in 2003 and 2006, Kaze ni Kienaide last performed 1998. Their Indies songs also last appeared on a regular basis in early 1997 during the last shows of Carnival of True (although Yokan did appear briefly during the SMILE TOUR 2004, due to the release of the remastered Dune album). Of course, songs that weren't released as singles from 1994-1996 have hardly ever appeared in the last 10 years, like Blame (1994, 1995) unless it's one of those P'UNK renditions (Round and Round 2005, I Wish 2007, Dune 2008). As for their B-sides, Brilliant Years (1995, 1996, 1997), Sai wa Nagerareta (1996, 1997), Sayounara (1996, 1997, and appeared once in 2007), THE GHOST IN MY ROOM (1997, 1999), I'm so happy (1996, 1997, 2010), metropolis (1998, 2006, 2007), Peeping Tom (1998 only).
Interestingly, even some post-sakura era songs have also been ignored for years. Most notably, snow drop (only appeared in 1998, 1999, 2005), finale (1999, 2000), Shinshouku ~lose control~ (in full 1998, 1999, 2003), Anemone (in full 2000, as part of medley 2006), Spirit dreams inside (2001, 2003).
So with the 2 concerts this month focusing on two different time periods 1991-1998 and 1999-2010, I'm hoping they'll truly surprise us.