@C.C. 95 Always good to get a response from you.
I've no desire to get into a pedantic tit for tat exchange but I was referring to the two films, as opposed to the literary works on which they were based. Hence, Stanley Kubrick's "2001" vis a vis Christopher Nolan's "Interstellar", as opposed to Arthur C. Clarke's "2001" vis a vis Jonathan Nolan's "Interstellar".
The latter film is clearly a visual homage to Kubrick by Christopher Nolan, whatever ideas his brother had come up with during the development of its screenplay.
And yes, its ending could have been so much better, especially when you compare it to the ending of another Nolan film, "Inception". That film, like Kubrick's, left it to the viewer to ponder upon its meaning and people have been doing so, with both of those films, ever since.
I saw "Interstellar" twice at the cinema and will be getting it on Blu-ray but somehow I don't see posterity treating it as kindly as they have "2001: A Space Odyssey".