The more I think about it the weirder it is for me. SPECTRE builds up Blofeld and a relationship between Bond and Madeleine. He symbolically throws away his gun for her, tells Q to do one last thing for him, drives off with Madeleine.
Sure, he could come back not mentioning her at all. But it was different with previous Bond girls - none made Bond actually want to quit the service before (Tracy being the exception). To treat her as just another girl who gets forgotten in the next film would be as weird as recasting Blofeld. Especially after tieing all the previous villains together with Spectre.
I just can´t get over it. Mendes must have planned to make or at least prepare a OHMSS-ending for the beginning of BOND 25 (hence the stricken last line) - but EON/SONY decided against it late in the game.
And if Craig returns and no continuity is at least tried, it will be a major disappointment for me.
I'm with you on this one - I feel as though it's been left wide open for Mendes to slope into an OHMSS theme for BOND 25. Usually, I would champion the fact that the Bond girl is not mentioned again and that we can happily imagine what they got up to after his mission. However, if EON and Mendes decide not to continue down this road we have seen in Craig's era then I will be shocked.