My PSK for urban environment is about the size of an Altoids tins. The PSK for other environment is in a regular tobacco tin. In addition I carry a FAK that takes the space of about 2 packs of cigarettes. I also EDC a knife, a compass, a multitool, at least one flashlight and a whistle. The overall weight may be around one pound.
As a HAM I also carry a handheld tranceiver.
Everything beyond that would be equipment.
The PSK is not there to extend the equipment, itīs for emergency. Getting lost means the equipment has to last for more time than originally intended. There should be no need to touch the PSK for that. For a day trip there is food, water and shelter for an overnight stay (not really comfortable but will do the job). For longer trips there is enough food and water for at least an additional day. Shelter was already covered in the original plan.
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If it isnīt broken, it doesnīt have enough features yet.