I just played my first game on Fracture with Killjoy and its seems like the map isnt that big afterall. Both ults cover more then the site itself. The nanoswarm lineup is just to make sure no one is holding that because thats the only angle...

If you win a round and still have knives leftover while defusing, if time allows it, use all your knives then defuse. If you don't, you wont get the extra ult point. A little trick but its effective in getting your ult quickly.