yeah, bringing in Wildstorm, and some of the Vertigo into DC proper has huge potential.
That is something I am pretty sure no comic fan will complain about.
There is some weirdness still.
The Authority and Planetary can"t really work directly into a JL universe. however, canon atm for that IS they are part of the multiverse. The snowflake in wildstorm is the multiverse in DC.
(how exactly that relates to the 52 is questionable, as the snowflake is much larger then 52 obviously)
Grifter would work quite well in regular DC. Wildcats probably would do fine. Gen13, and DV8 could as well.
Alot of veritgo stuff like Death+endless, Constitine, Hellblazer, Xanadu, swamp thing, etc already cross paths, and have been showing up.
Alot of it comes down to:
the mainstream comics are stuck in an endless cycle of rehash. These companies make money on selling the image of batman/superman/xmens/piderman. Those core titles, they put the best writers/art teams on. And just maintain the status quo, so new readers can come in, and get the product now, as they did 10, 20, 30 years ago. Endless event comics for this as well. Look at this thread for examples, people say they are interested? they go look at the current event going on. seige, brightest day, etc.
But if you actually like comics, avoid that shit like the plague. Its going to be an endless cycle for you. for you, the best comics will be the fringe stuff, where creators can actually do whatever they want. booster gold, powergirl, red robin, secret six, Guardians of the galaxy, avengers academy, for a few examples. or the really outside mainstream of Darkhorse, Vertigo. Which is all amazing. THAT stuff needs to be A++++ quality work, or it won"t get published. They can"t afford to publish shit.
The mainstream stuff CAN be good. As its mainstream, which means they can and do afford to pay the best artists and writers to do it. And the quality shows more often then not. But sometimes, the editorial mandates, can really gut it. And if you start to build any attachment to the stories/characters. enjoy having any quality story told, be retconned 6 months later, by a new team.