I haven't read any Martin Amis as yet. But a Bond novel by him would fantastic just for the comparisons with his father's effort as well as for the different (if so) interpretation of the character he would offer. Doubt it will happen though.
Thing is, as writers Father and Son are/were like chalk and cheese - beyond the gimicky family connection there'd be no comparison to make, interesting or otherwise.
I've read Martin Amis's novels and can assert that as writers the two are/were like chalk and cheese. There is absolutely nothing in Martin Amis's output that makes me think he can (or would ever want to) do Bond. He is a gifted stylist, but he cannot plot and is very sententiously introspective. And his protagonists are pretty much all the same, i.e. an extension of Martin Amis himself and therefore nothing like Bond. Unless you want a Bond who is worried about his receding hairline, cynically sceptical of the world around him and spends much time plotting ways of getting in birds' knickers (and worries that he may not be able to get it up), and who goes down to the local pub to get away from Dench M's nagging and have a smoke or two, and suffers a fair degree of self-hatred, and is relieved the double O section has good medical benefits so he can do something about his bad teeth which are giving him a world of trouble... then no, you do not want him doing Bond.