To be fair, most of those traits are new. Before Johns, Mera was in very bad shape and everyone treated her like dirt. I like the silver age a lot, warts and all, but after Manta killed their kid she just slowly morphed into his awful ex wife who sometimes cared about him. The less said about PAD's Aquaman, the better.
Since then, she's essentially his co-star, got a mini and a graphic novel all her own and got to be on the Justice League in his place for a bit. I think they're aware she's popular and I suspect she'll feature prominently in Aquaman stuff from here on out. As for her own book? Supergirl and Batgirl are bookless right now so it's not looking great for Mera, but who knows, maybe Aquaman's book got held back because they want to make a splash with two books.