A lot to comment here about, fellows.
First, Barry Allen is not back. No, he's not dead, but he's trapped in the Speed Force.
I did like that panel where it had all the speedsters that went into the Force emerge again to lend aid like Valkyries from Valhalla.
Just because you're dead doesn't mean you can't pull a few guest-shots here and there. The one thing about the Speed Force that I actually LIKED was that it meant that dead Speedsters could reappear and be used dramatically in future stories, without the awkward necessity of "bringing them back to life." The ultimate have-your-cake-and-eat-it-too situation. Yet this aspect of the Speed Force was not utilized (until now) except in the "Jonny Quick's giant head in the clouds smiling down at everybody" way, with emphasis given to the more banal and mind-destroying aspects of the concept, personified by "costumes of solidified speed" and "I'll stop those bullets by removing the speed from them!"
Second, my friend Julian must be very happy because the Speed Force is gone. This is probably a good move, since the Speed Force is like some of the pseudo science used in various Trek shows, a catch all to solve various problems. In fact, it was used to solve the problem of getting rid of Superboy Prime.
I think I may have mentioned it, but I love my boy Geoff Johns.
Third, disgusting that Superboy Prime is revealed as a maniac. How could he have hidden this from Kal-L and Lois all this time?
I agree with nightwing that the scene where Superboy-Prime goes on a rampage was excessive; the art could have been toned down considerably and we could have gotten the same effect. Nightwing once complained that he is irritated by the aftereffects of death; ...you know, somehow, I don't think we're going to see any of these Titans again.
Although while the first instinct may be to shout "wow, they're written wildly out of character," there still is quite a lot of miniseries left to explain their actions and place them into context. The possibility of mind-wiping and brainwashing cannot be ignored.
Fourth, it does look like Bart's going to be the Flash, at least until he can find Wally.
This concept is aggrivating because Bart, when written by Waid, was an obnoxious snot. However, in recent times, Geoff Johns has characterized Bart and Superboy as achieving a great deal of maturity and leaving behind the short attention spans, tv-watching, and immature horn doggery that made them such annoying pains to read. Geoff Johns managed to do the impossible and get me to like these characters when he gave them maturity and had them age. If where he is going with the "Bart as Flash" subplot is placing young Kid Flash in a situation where he acquires dignity and maturity and adulthood, I'm all in favor of it.
Sixth, Bludhaven's destroyed. Chemo-icaled bombed by the Brotherhood. Why? Seems only designed to get Nightwing back in Gotham eventually.
Another choice I agree with. Bludhaven lacked Gotham's style and personality and art deco, and had all of its recent attitudes of nihilism and grime; it was an inferior redundancy that is now corrected, and serves to add the bonus of getting the Batman family together.