Okay, here's another try. Gotta little caffeine in me. Read the other posts. The fact that you are carrying a 30L pack sank in. Here we go.

30L pack for day hiking? That's the first thing I'd change. When you have that much space, it's easy to toss in extra gear just because you can. In fact, I see in one of your responses a couple of mentions of "they don't take up much space." My approach is more one of "do I need it" than one of "do I have room for it." I think that a day pack is normally more than enough for day hiking. I'm currently using a fanny pack and don't feel like I need any more.

Anyway, here's the maximum that I'd leave on your original list:

1 Mora-knife
1 folding Saw
1 Sharpening-stone (v-shaped)

1 pair of gloves
1 sun-hat (or ski-hat, depending on season)
1 bandanna
1 small bottle of sunscreen
1 small bottle of insect-repellent (50% DEET)
1 pocket-size tin of Vaseline
5 desinfectant-wipes
1 bandanna

- 1 hemocut
- 1 pair of illuminated tweezers
- 1 click-away
- 1 triangulair bandage
- 18ml. desinfect-lotion (similar to Purrell)
- 2m medical-tape
- 4 Immodium
- 7 antihistamine
- 9 Ibuprofen
- 6 gauze pads 1/16
- 2 ampules of saline
- 2 pair nitrile gloves
- 1 assortment bandages (small,large,waterproof,fingertip,etc.)
- 6 alcohol-prep-pads)
- 6 Povidone-Iodine prep-pads
- 3 antibiotic-ointment packs.

1 LED-headlamp + 2 sets of extra batteries
1 photon-microlight
1 BIC-lighter
1 Fire-Steel Scout
5 Coghlan’s Emergency-Tinder and some cotton wool (the cotton wool will work better if it is impregnated with vaseline)
2 small candles
1 Esbit-stove with extra fuel-tabs

1 Coghlan’s heavy-duty space-blanket (replace with AMK 2-person)
1 AMK Heatsheet Emergency Bivvy
1 poncho

1 1l militairy canteen
1 cup for canteen
1 Platypus 1l. water-bag (unfilled)
1 Spork
1 Vitamin C-drink powder 100gr. (2 l.)
2 O.R.S.
5 sweets
1 Cup a Soup chicken
1 energy-bars
1 roll of Dextro energy tablets
2 Kendall’s mint-cake
1 chocolate bar
3 tea-bags
8 micropur water-purifying tabs
1 BCB water-purifying straw
2 coffee filters
2 zip-locks (1x quart, 1x gallon)
1 fishing-kit
1 float for fishing-kit
10m. Paracord
1m. Duct-tape - 50m. sewing thread
2 medium sewing needles
2 buttons (reduce number)

1 Coghlan’s signalling mirror
1 Coghlan’s 4-1 Whistle
1 base-plate compass (get one with magnifying glass)
1 map of local area

(redundancy kit not needed)