Am i incorrect in thinking Kevin McClory owned titles like Spectre, the blofeld name as well as all the material related to thunderball's story?

Now that he is dead could they conceivably use them or would they have to pay his estate?

Doubt they ever revisit Blofeld though not after Austin Powers. Its too silly to even think about.

Telly Savalas was great in OHMSS but Donald Pleasance was horrible in YOLT.

The whole quantum thing was dropped and unresolved because people thought Quantum of Solace was a turkey.