>Apple Please address this issue
Intel formed a team in 2002 tasked with finding a way to accomplish offline access to cloud/shared data for laptops not connected to the 'net/each other, and soon learned there was little to do but cache local (with whatever warts that entailed) until connection was re-established.
It is now 2016, Apple is still pushing iCloud and if you think this is just about data, think again. Who knows why CK (not a fan) seems to be missing local caches, but I'd speculate that Apple is aiming to recoup their investment in server farms by pushing users to stay connected to (subscription based) remote content warehouses, so they can buy more (subscription based) music/apps/movies. Out of storage on your device? Buy (subscription based) storage and live off the cloud... Everyone wants to be subscription based - look how well it worked out for MS. Build it, make it hard to live without, and they won't have any choice but to eventually spend money on it.
Either a device is connected, or not, and it is up to the individual user to decide just how important their data/content/access is. When modern access is mandated, be sure to work with a connected device, since not being connected is, well, so 2002.
But as always, forum posts are not bug reports/feature requests, so feel free to reach out to Apple directly via the Report Bugs link, below right, every page here for things you'd like to see going forward.
Good luck.
Ken