Love Bond movies. So many good memories in the 80's of watching them on the tube with my dad. It's a hell of a franchise. The different Bond actors all brought their own vibe and energy. Along with the ever changing decades/style and how the movies were being made as the franchise has evolved over the many years.
I would prefer Nolan would not muck things up by getting involved. He might say he will stay true to the franchise, but I have my doubts. He is an excellent director, but can also be overbearing with his brush.
Cavill has long been in the running for Bond. He was almost the choice before Craig, but they thought Cavill was too young at the time. He is almost too-stereotyped for the role, though. Craig brought a different vibe to the movies he was in, and it was a good thing for the Bond franchise. Who the next Bond is will be interesting.
I also think Elba would be excellent. But he is likely too old for them at this point, and I think even he has said he is past his due date to be Bond. I think that ship has sailed.