Calvin Klein, I was suggesting that maybe spare underwear might be a good idea
OK, I'm going to try and do this item by item.
Rucksack Dutch Army Lowe Alpine 60l with 2 10 l side pockets and MOLLE pouch on back for First Aid Kit storage - this is a BIG bag, but it's also a comfortable bag, and as you said it's mainly full of sleeping bag, I sometimes use a Berghaus Vulcan rucksack which is even bigger (and also Dutch army surplus) I'd ditch the MOLLE first aid pouch, people generally carry way too much first aid kit (this isn't the place to discuss FAK though, so I'm not going to).
Sawyer Mini water filter in case - This depends where I'm going and what I'm doing, but very generally speaking if I'm staying put and having a fire then I'll use a millbank bag and boil, if I'm on the move then I'll use a water filter (I like the platypus quickdraw) Lose the case and wrap your filter in a dry bag, it does exactly the same job but has the added bonus of giving you another option for transporting/storing water.
Snugpak jungle blanket 15deg comfort rating - You said already that you're wanting a new sleeping bag, so I'll ignore this
Circular MOLLE pouch for storage (kept inside the sack) fits following:- - I get it, but it's overkill, the stainless pot is "bombproof" and it protects everything that's inside it, a carrier bag would work just as well and is much more versatile.
Stanley Pot - I've never used one, but they look pretty good. I prefer hard anodised aluminium personally, but only because it's lighter (I don't like titanium cookware, it's the wrong material for the job).
Plastic cup - yes!
Stainless steel mug and lid - I don't think you need this, personally I'd prefer a little kettle to go with my aluminium pot if I wanted two cookpots.
MSR burner - This is what I use, they're brilliant.
Gas canister - Obviously need this if you're taking a gas stove, nothing to add.
Trangia burner and meths - I wouldn't take this if I was taking the gas stove, I wouldn't take the gas stove if I was taking this. I honestly think that my choice depends entirely on how annoyed I was by my choice of stove on my last trip. Trangia's are faffy but quiet, gas stoves are really simple and noisy.
Compass - yes, one with a mirror if I'm chilling in the woods (I like to have a shave in a morning) a baseplate model if I'm moving around (they fit in the map case better).
Head light - yes!
Mini torch - yes!
Foraging bag - use the carrier bag that you replaced the MOLLE cookset pouch with, in fact, just add a coushaggu ple of carrier bags anyway, they're really versatile bits of kit.
2l Helikon Tex plastic water bottle
Secondary smaller aluminium water bottle - I use a 500ml nalgene and 1 or 2 600ml smartwater bottles, but I do need to be "on it" with my water useage/procurement, nothing at all wrong with having more capacity.
Ferro Rod - (reading the room here) yes! always! I never leave the house without one!
20l dry bag - Nothing wrong with this but it could be a lot lighter.
Emergency bivvy plastic bag - no, a bivvy bag is a much better option.
First aid kit - yes, but the contents are very much context based.
Helicon Tex poncho (doubles as a secondary tarp) - no, ponchos are one of those things that sounds like a good idea until you use one, they're alright in the jungle but they ain't no good if you're with a woman....or something like that.
DD regular 3x3 tarp including pegs and guylines - yes!
Camping mat - I think you mean the sit mat, yes, I often carry a bit of old foam mat that I found up in the hills once, great for all sorts of things.
Windsheild - if I'm using gas then yes, if I'm using my frankensteined trangia then no.
Leather gloves - if I'm having a fire then yes, probably, but I generally just go for synthetic work gloves. Gloves are massively underrated.
Condor Bushlore sheath knife - yes if I'm having a fire, no if I'm not.
Alox Farmer SAK - I prefer the harvester model, but yes, fantastic tools, especially for the uk.
Mini groundsheet - 2mm foam as mentioned previously.
Mini pillow - no, I always carry a "puffer" style jacket, and I keep it in a dry bag, the two things together make a superb pillow.
Inflatable bed roll - yes, I prefer self-inflating because they still kinda work if you get a puncture.
OEX 3/4 season mummy sleeping bag -5deg comfort rating - yes, but I look at my sleeping bag as being part of a sleep system, so liner, sleeping bag, and bivvy bag. I think sleeping kit should be layered like clothing is, other people disagree, I have no idea who's right.
Items not shown in pic
Bacho Laplander Saw - yes!
Paracord - some form of cordage is always a good idea, paracord is a decent option even if it is massively overkill for most jobs.
Fire starting kit (small round tin including birch bark, Vaseline covered cotton balls and mini BIC - Nests in above mentioned MOLLE pouch) - my toilet kit (you need toilet kit) is my firelighting kit, it's got tissues, alcogel, and a lighter in it.
ONE TIGRIS wood burner -for "ambience" as you said, yeah why not, they're pretty much useless for cooking on but sitting and feeding a little fire in a tin is a lovely way to spend an evening.
2 x retractable walking sticks for tarp tent configuration - yes, I'm pushing 50, and my knees are way ahead of me.
Trangia collapsible stand - the "triangle"? I love mine for making a brew on a day walk, I wouldn't want to cook on one.
That's a lot of text, sorry, but I hope it helps.
