Well, I was about to, but Zorin beat me to it!
along with those mentioned how about the following;
Jeremy Irons
Kenneth Branagh
Gabriel Byrne
or if he could be gotten....
Sir Ben Kingsley
And how about Colin Farrell, Eric Bana, Edward Norton or Jim carrey, then ?!
Name dropping is very nice, but it could use a little realism.
Hmmm, other than Kingsley, I'm not sure what's unrealistic about any of those names;
Irons and Byrne haven't had leading roles in films for a few years and are largely doing supporting work and television, Branagh when he sint directing, takes largely supporting roles; I suspect all 3 would love the higher profile a Bond movie or 3 would bring...
Maybe next time you can explain rather than just criticise?
More seriously, I also have my "dream list" of potential Ms (I'd love to have Michael Caine), but I know there's no chance I'll get it because Bond management always cast rather not-so-well-known (by that, I mean not audience-famous) people. So, yes, "big names" are quite out of the equation obviously. Sheer history fact finding.
Same with potential villains. Honestly, how many of us knew about Mads Mikkelsen? Or even Mathieu Amalric (he is known in France, but even there, not that much), to name but the latest ones. I sincerely doubt they'd cast Fienes, Pacino, etc.