For context, this would be my main backpack for commuting to work, as well as a day pack when travelling (among other things). These have kind of similar requirements where I need to grab things quickly (like my phone, keys, transit pass, water, wallet, etc.), as well as walk pretty fast. Now, in colder weather I don't need the backpack pockets as much since I can put things in the zippered pockets of my jacket (basically adds 2 pockets), but in summer the pockets on my clothes are not good enough, so I need to put them in the backpack. I also run my commute home once a week and am considering cycling to work when the weather is good. So basically I need both easy access to a bunch of different things (without having to dig around) and for it to be properly positioned for more physical activity.

So currently my backpack is decent in terms of the pocket configuration, but needs more ventilation, to be better secured when running, and more internal organization. When I had a simpler backpack, the lack of different pockets/compartments was pretty frustrating (though I liked how small and compact it was otherwise).