They could use some pointers from the Connery movies. Quantum of Solace seemed to be less of a Bond film, and more of “just another action film”.
I think Quantum of Solace is apart of a story arc that began with Casino Royale.
My opinion then and now is if they don't put the "Bond" back in Bond it will be their last movie. There are a lot of action franchises out there that last 2-3-even 6 movies but nothing like Bond, because only Bond is Bond.