At both ceremonies at the end of ST09 and STiD there were older ladies (officers) present. STO9 centered around cadets going forth to Vulcan while the rest of the fleet with some older personnel where in the Laurentian System (?) - so there wasn't much of mixture of ages. But apart from some scenes in STiD there wasn't that many older people represented. My theory is that aging has slowed or that people are living longer and looking younger - the product of lifestyle and science but I also believe that with some blending of species - example would be Spock who would still outlive the other crew members because of being half Vulcan. I really didn't even see anyone really over what we would consider 40 in the crowd scenes of San Francisco at the end of STiD.In the special meeting at Daystrom there were Admirals, Captains and First Officers - also, some of them either died or where injured (including one woman in the leg) when Khan attacked - the officers in the special meeting with Marcus when Kirk and Spock interrupt might be some of the survivors or replacements (but just happen to be all men). Also, at the time, before Kirk and Spock inform Marcus that Khan is on Kronos, it was believed that Khan was still either on Earth or in federation space - maybe Marcus was having more than one meeting with officers of different regions.Even though I bang on about wanting more women and in general prefer women characters I give Star Trek a pass on the male main leads. That is just TOS for you. Kirk and Spock were a duo the way Picard and Riker never were, chemistry and writing just made some magic with those two. I think JJ is doing some stuff towards putting more women into the supporting characters and I also think he could have made a much bigger effort in this film. Yes there are 5 (?) women at the table when the special meeting is called (someone posted a pic with them numbered, might be more). But they are still a distinct minority. And when Kirk and Spock run up to talk to Marcus about Khan being on Chronos he is having a meeting with about 7 other people he dismisses. All of those people are men. That's just silly. How hard would it be to make half of them women? I look at this and think, didn't JJ notice?
So he has a way to go just visually IMO. But I'm totally cool with this being the Kirk and Spock show, that's what I'm here for.
I get the impression that Marcus' interrupted meeting was with the upper echelons which were all male. Perhaps JJ doesn't want to show older ladies on screen but maybe older men are acceptable.