Uh, I mean, I haven't really seen that as a trademark of his. He has done it in Deathstroke, but when he does do it, its basically consistent with Pre-Flashpoint canon, even when it comes at the cost of New 52 canon (which is fine in my book). Hopefully, that's what we'll get here.
Plus, the past few issues of Deathstroke have been pretty "flashback-less"