And not forgetting, of course, Bond's visit to his wife's grave in "FYEO". Also, we must remember, roughrider, that Blofeld (and SPECTRE) also featured (though less prominently) in "FRWL" and "Thunderball", and the latter in "Dr. No" as well ... not that I'm nitpicking or anything 😛 . But you're right, of course - the continuity between the Bond films was always loose at best (as you say, one of the problems with having a film series centred around a character that doesn't age over 40+ years!), but a part of me was (and still is) sad to see it go. There were other nods to past Bond films scattered here and there as well (such as Bond looking at gadgets from past missions in "OHMSS" and "DAD"😉, but these were admittedly few and far between.
Dont' get me wrong - I'm very happy with the latest 2 Bond films ("CR" in particular), and I'm eager to see where they go next. And perhaps, Jovan, they'll start to establish a new long-term continuity for the re-booted franchise?