Do you think that writing Culture fanfiction is disrespectful to Banks?

For a while I have wanted to write my own Culture novel. Well, when I think of a good idea for one, anyway. Not to make money from it or officially publish it, just to be shared among the niche who read such things. Do you think that writing fanfiction of the works of a dead author is somehow disrespectful? Did Banks ever express any opinions on such things?