I have to say, I'm pretty much 100% agreed. Infinite Frontier and the other current DC books actually feel like they take place in a superhero community with ACTUAL HISTORY and ACTUAL RELATIONSHIPS between the characters. It's also nice to see some actual DIVERSITY in terms of who gets the focus. I don't think that we would have gotten an event focusing on Alan Scott, Roy Harper, Jade, Obsidian, and Cameron Chase during the New 52. If only because a majority of those characters didn't even EXIST during the New 52. They were written out of continuity.
Infinite Frontier feels like 52. The OG 52 from 2006, which is one of the best comic book events ever written. So, that's a good thing.
If this were still the New 52, the event would be starring ONLY the Justice League (with majority of focus on Batman, let's be honest). Alan Scott who? Psycho Pirate who? Captain Atom who? Magog who?
I don't even think that, during the New 52, we would have seen characters like Peacemaker taking a central role in Suicide Squad, as it would have just been all about Harley Quinn. Not that Harley's bad. But having her as the star of Suicide Squad is just another symptom of the "Batmanification" of the DC Universe.
Which is honestly how Didio seemed to want it at the time. It seemed he was very much against any characters who took focus away from the core 7 of the JLA even existing. So, no legacy characters or at least, significantly less legacy characters, as the only ones who survived were the ones with too vocal of a fanbase to kill off completely like Nightwing. That also means that pretty much every non-Batman or GL related character either didn't exist anymore or had their histories completely scrubbed.
Ted Kord? Erased. Booster Gold? Completely rewritten. Jaime Reyes? Rebooted. Titans? Erased. JSA? Erased. Jennifer and Anissa Pierce? Erased. Grace Choi? Erased. Nubia? Erased. Donna Troy? Erased then rebooted in a way that was truly cringe-worthy.
And in doing that, Didio (inadvertently) erased the things that gave the DCU texture. That made it MORE than just Batman, Superman, and the Justice League. The things that brought in a lot of fans and communicated the point: "Hey, the DCU is a place with history, a place with wonder, a place where heroes have gone through things and have forged bonds with one another and some have even fallen in love and had families." In other words, the things that made the DCU interesting and gave it an actual lore...