It might not last very long -- probably won't, if I'm being honest -- but I still think it's worth doing.
Companies still need to build worlds around their main characters. What has made Aquaman a second-tier character for so many years is that there has never really been any reason to view the character as important to all but a nameless/faceless set of Atlanteans who either love or hate him, depending on the day, Mera and Garth.
What makes Batman popular? Or Wolverine? There are many reasons, but some of them include the fact that their interactions with those around them have been so clearly defined over the years -- friendships, alliances, enemies, so on and so forth.
Even if this series lasts...oh, eight or 10 or 12 issues, it will still help to give Aquaman, if he appears often enough, another set of characters to interact with, which helps that character as much as it does define the Others.
*Sniff, sniff* "Damn it, Diana...If I'd known they would trade us in for a JT Krul-written Captain Atom and "The Savage Hawkman," I'd have let Superboy-Prime destroy all reality.""Superman flies and is really strong...what the fuck else do you need to know?!"
-- Hitler, expressing his displeasure about DC rebooting and complaints about continuity