The best thing they could do for the franchise right now would be two or three prequel films showing Bond in the lead up to attaining his double-O position, perhaps as a naval intel officer or SBS operative in WWII, and immediate post-war Europe and/or Asia.
The could even do it to stage subsequent contemporary films by having Ralph Fiennes as M looking for the next 007 and reviewing the history of the position and namesake by poring through old dusty records and dispatches and flashing back to the events.
A long time ago I had an idea for a movie called "James Bond at 7" where he helped take down a group of bullies at a boys school in Britain.
That could work, but I still think they should just let it go and actually create something for a change.