I found the first issue boring and cheesy. Every one is in love with Barry Allen, Barry did this, Barry did that, Barry made me run again, Barry gave birth to president Clinton, etc...
Honestly, it is nice to see Barry back and all, but as Flash ..... god, I hope this serie won't be developed like GL was ! Meaning : around everything presented in Rebirth. No time for the friends, guilty or not guilty. period. Wow. That is not how I remember Barry, and above all that is not how I remember or want Flash. I did not buy the whole "my mother was murdered", I did not buy the "Mr Garrick", I did not buy the "guilty, not guilty", I did not buy the "flash ring, nor the flash fact, nor the suit, nor the small wing on the boots nor the belt", and above all, I did not buy the Bart part "Wally is Flash" sequence. The first time I like Bart ? Come on ! It is a well-known way to do things : at the beginning of the story a guy (bart for instance) hate the main character for all of the reasons fans or logic would find. Then at the end of the story, the main character proved Bart that he is worth it and the guy changed his mind about the main character.

Supposely, all reluctant fans will be "ah ok it is nice in the end".
When I saw Barry running I was "WTF is that?", looks like a copy of Wally.
By the way I re-read the issue several times, and every time I saw the first pic of Wally, I was "oh hey it is Flash", and I think he was more impressive running fast around his kids than Barry in the whole issue. Not sure how I should comprehend his attitude towards his kids.
In the end, if someone told me the whole book were a kind of "back on krypton 12 parts adventure", I would like/believe it. The only thing I liked was the format of the adventure : you really feel that they put a lot of effort putting the Flash in the spotlight.
And again, when i saw Barry I thought that in some ways it could have been good to have Barry back as the civil persona, as a detectiv, as a police scientist, not being Flash at all, but in the Flash world anyway. my 2 cents.
And the art ? I did not find it good nor so-geniously-great. Good but far from great. Wally does not need a new suit to make him visually different from Barry, he already is, IMO. And I think Barry's uniform s*cks. I think the Wally's suit was the excellent maturated idea of Barry's suit, a definitive suit.
barry is the new black flash
That would be a great idea. To fool everyone about the status of Barry allen. Fight death within Death. I would find it interesting.
It's more contemplative about what Barry means to the DC universe than GL: Rebirth was about Hal.
I disagree Corpulent. Every time you talk about Hal, it is always to tell that everything about him is him. I disagree completely, GL:rebirth was not about hal's rebirth but about the whole GL Corps rebirth, and the effect of Hal's rebirth on everyone.