I like the idea of the Ten Essentials as the basis for a general purpose PSK, and particularly the Dallas Siera Club's updates "Ten Essential Groups" idea. Using that as a framework and plugging it what you have, you can see where you may be coming up short:
1. MEDICAL
Little first-aid kit
Good.
2. SHELTER
50ft+ of 550 cord, Space blanket
I think some sort of rain protection is important, unless perhaps you are traveling in the desert. I like the multi-purpose usefulness of a poncho (raingear, ground cloth, shelter) but a rain suit or even just a large size garbage bag in a pinch is better than being wet.
3. FIRE
Tinder kit, with flint, and striker
The traditional set up is nice, but I see no reason not to include some matches and a lighter or two in addition. If you need to light a fire in survival conditions, you should take every advantage you can.
4. HYDRATION
Canteen with
stove and water purifiers
I don't think a stove really has a place in a survival kit, except perhaps a large, group kit. I'd drop it to save weight. I also prefer water purification tablets to water filter/purification units in a PSK. Much smaller and lighter.
5. COMMUNICATIONS
Mirror, whistle
I also include my cell phone in this group, as many eastern "wilderness" areas have cell phone coverage these days.
6. NAVIGATION
compass,
Compass does you only limited good without a map to go with it!
7. NUTRITION
A small 4 square tackle box, with hooks, classic sd, line, little alien fish things(look like bugs with hooks on them.
And maybe some
food like energy bar or vitamins and stuff...
No maybe about carrying some easy to eat food! Energy bars, granola bars, beef jerky of some other durable, non-perishable food items are a must. You can't count on being able to gather/catch wild food in an emergency.
8. INSULATION
Even on summer hikes in the south, I usually bring at least a hat and light pair of gloves in case I get caught out on a cool night. Perhaps a long sleeve shirt of some kind, too. In winter even more.
9. SUN PROTECTION
Even in winter, protection in the form of sun glasses is important. In summer or at high altitudes sun screen is important, too. In hot weather a sun hat's not a bad idea, either.
10. TOOLS
Light my fire
spork and knife utensil
SAK Traveler, Bladetech ULU, BK11...
I'd drop the "spork and knife utensil". If you have a SAK or other folding knife you don't need a dedicated eating knife and a spork is a luxury item is a PSK. One of the more basic SAKs is my choice for a bladed tool to include in a PSK. Something like the Victorinox Climber or Farmer, for example.
Hope that helps!