Here are some thoughts--

replace the space blanket with a heatsheet,
no cell phone or contact numbers?
One of the best tools is cash
add an earpiece for the radio
perhaps add a poncho for rain, tent, groundcloth, etc.
replace your maglight with an LED headlamp
Upgrade to a 'name' multi-tool ( w/ saw?)
moleskin?


Looks like a well thought out kit.

Teacher