Loved this issue. Both Lex and Lenny ended up looking like rock stars while Batman looks like a chump as he should for this particular story. I don't see how they could end this event cleanly but I've enjoyed this as a mini series overall.
It's definitely NOT ending cleanly...April solicits make that pretty clear. More of a reason to love it, IMO - unlike most other crossovers (Marvel and DC are both guilty) it is going to have really big impacts on the DCU, major team compositions, etc.
Also - was thinking about this earlier...obviously whatever the big threat the Crime Syndicate is running from is going to find its way to Earth Prime (or Earth 1, whichever it is in the New 52)...we know that there is going to be an Earth Prime/Earth 2 crossover soon...final issue of Flashpoint had Flash having a premonition with Pandora about three worlds/universes becoming one to stop some omniversal threat...perhaps that was referring to Earths 1,2, and 3? So much fun trying to interpret this stuff haha