Cannot ignore that the plot made absolutely zero sense...
Firstly: Krall was the Commander of the Franklin, yet conveniently left it abandoned, with all of its tech... ALL of its tech intact. That the ship also managed to take off at the end was flabbergasting.
Secondly: As in the first Star Trek reboot, the villain waited an awfully long time to take his revenge. He's had decades of planning, an armada of drone ships that can tear apart a Constitution-Class Starship in minutes, and easy access to the Yorktown, whose defenses melted like butter under his assault.
He could have killed every man, woman and child on Yorktown without the ancient mega-weapon.
Thirdly: That weapon. The feared bio-weapon. A weapon which - unlike the drone ships - couldn't eat through glass or steel (in other words, it would probably be stopped by a space-suit), couldn't move very far or fast in gravity, wasn't as "invisible" or insidious as an actual nano-tech swarm, couldn't swim/fly against a strong breeze, and was only deadly to single creatures. Kirk spent minutes in the air chamber with the buzzing but stationary swarm, and it never moved to attack him. Not even once.
Fourthly: "Sabotage". Really? Fun, but a little contrived. The explanation that the Federation wouldn't have known what frequency to transmit at to jam the swarm's communication systems without Spock and Bones boarding a ship first, that's passable, but there has got to be more than one song in the entire Trek-verse.
Fiftly: The Yorktown has probably the worst in-house security in the Universe. No flying patrols. No defensive cannons inside the sphere. No mobile police force. Nothing. And there's just one high-ranking Starfleet officer on the entire base? With the security being manned by a single X-Wing pilot?