luckydube,
There is no point in speculative quibbling about the precise comedic tone of E7. But I do hope it is in the spirit of the originals. And of course there will be nostalgia when you see characters decades later. And of course there will be new younger heroes. And of course it shouldn't be LOTR (though I didn't find those films so drainingly serious). What you should do is make a new thread expressing the view that there will be nostalgia, new heroes, light funny moments, and generally Star Warsy...but I would frame it in terms of joking about how old they are.
I'm teasing obviously. I don't see why there is a need to focus on their age as a joking point, especially to warrant a new thread ;] It is possible to put in a light-hearted recognition of where they are in their life stories (like the Yoda quote example) or Han Solo could say "here we go again" (both based in nostalgia and in character with greater meaning than being old). Putting them in situations to make them look silly due to their age would not be appealing.
I really don't think there should be any fear that this will be Star Wars Expendables, as Bingo "joked."
It's good that others are tentatively excited. I just hope there is not a single moment that knocks us out of the story for a cheap laugh. I think it was CP3S who complained about Big Bang Theory laughing at geeks, rather than with them. I disagree, but I don't want Star Wars mocking itself or the audience's expectations. The light-heartedness of the originals wasn't self-mocking.