To me, Hitman is more stealthy than the action-adventure world of Bond. Like, it’s possible (even rewarded) to finish an entire Hitman level with no dead bodies, no alarms raised, and nobody knowing that anybody was assassinated. I can’t really see a Bond game where there’s no shootouts, no car chases, no parkour type action, etc.
It’s certainly possible to play Hitman that way. You have access to loud guns etc. But, the game design seems to be that if you’re resorting to loud guns – or even if you get noticed, you’re not doing it the right way.
What I’d like to see is a Hitman-style game focused on espionage instead of assassination. Like, sneak in somewhere, plant a bug, then get out. Or, extract an asset from a hostile country without anybody noticing. Or, photograph the secret documents without raising any alarms. You could easily do all that with the Hitman engine. It would just require a little adjusting of the mission scripting and the victory conditions for the various levels.