Ahem, my very very long 2016 list. Could probably have formatted it better..
Discovery of the year:
-The Casmara Gold Mask - what started off as a weird AB product chase ended up in Spain, purchased from France and have been precious about the last one left ever since.
-The Naruko Magnolia Gelly probably makes for a good runner up, tying it with the Missha First Treatment Essence (now sadly reformulated and subsequently shit) and TO Niacinamide 10%.
Surratt and The Ordinary as brand discoveries.
Would repurchase:
The above, will continue to always buy the Verso Eye Serum, BR P50 (in some version), SPF from Japan, HA toner from Japan, MV Organics Rose Plus Booster, Omorovicza QoH Mist (purely for the smell), Aurelia Probiotic Miracle Cleanser, Kibiki Premium Facial Wash, PC BHA 2% Liquid, Muji Sensitive Skin Oil Cleanser, Laura Mercier Tinted Moisturiser, LRP Thermal Water Mist, Cattier Masks, Sachajuan dark volume powder, Christophe Robin Shampoo, Conditioner and Hydratant Santal Cream, Chantecaille Faux Cils Mascara, Sisley Concealer and the Benton Steam Cream may even be joining the ranks. Also, the Blithe Abalone Sheet Masks, the Naruko Magnolia Sheet Masks, and the Benton Snail Bee High content Sheet Mask (which I found for a steal on Amazon.co.uk but I'm very doubtful that you'll end up with ten and not just the one, can't find out for myself as they won't deliver to NL).
Planned purchases:
Andalou Probiotic Cleanser to see how it'll match up to my very pricey Aurelia
TO Buffet and Caffeine and possibly Matrixyl
P&M Superstar Retinoil
Eneomoy Advanced C Body Lotion (with 5% Vit C and 30% Glycolic)
A bunch of DIY ingredients to make Vit C and Niacinamide serums for the body, Cleansing Balms, oil blends, and possibly some scented candles.
Won't repurchase:
TO Lactic Acid - used on body so probably unfair but found it underwhelming and know am not alone on this
TO Retinoid - clogged my face and I needed to use more BHA to rectify, not ideal, will, however, RP for use on the body.
Su Man Velvet Skin Brightening Serum - so wanted to love this, made my skin addictingly soft but it made me break out with continued use 
Oskia Renaissance Cleansing Gel - actually a decent cleanser, smells awful like bubblegum and made me break out with repeated use. Also confusing as it's a good makeup remover but it's just way too expensive to be a makeup remover and is so-so as a second cleanser.
This Works No Wrinkles Active Serum - a Vit C serum with unknown %, took a gamble when it was on offer. Didn't pay off.
Odacite Eye Contour (sample) - I like the Odacite serums but this one for the eye just isn't my cup of tea, too heavy and too active with the essential oils.
Pai Rosehip Regenerate Serum (overdue) - throwing out nearly full, just fine and didn't do much for me, probably why it never got finished, thankfully a GWP just like the Pai Lotus & Orange Blossom Bioaffinity Skin Tonic because the smell was a bit vinegary.
Things I tried from Pai that failed to excite me:
Chamomile & Rosehip Calming Day Cream
Camellia & Rose Gentle Hydrating Cleanser
Darphin Ideal Resource Smoothing Retexturizing Radiance Cream - so very meh. Nothing retexturizing or radiating about it but I needed a new moisturiser.
Another moisturiser that failed to impress, Zelens 3t Complex Essential Anti-Aging Cream.
Avene Thermal Water Spray- thought I'd take a walk on the wild side, the LRP nozzle just makes it so much nicer than Avene which is strangely a bit chalky.
Bourjois CC cream Lisa Eldrgidge made me buy it, hated it, full stop.
Givenchy Teint Couture Balm - loved it at first then something happened with the consistency, tried to make it work for so long now but I'm officially giving up on it.
Bourjois Healthy Balance Powder thought it would be a nice cheaper alternative to my LM translucent powder, but it dehydrates the hell out of me and smelled rank
Charlotte Tilbury the retoucher - was perfect at first then went blergh
Charlotte Tilbury the feline flick - way too difficult to work with, no flexibility and colour disappears far too quickly.
I like the CT beach sticks but they're overpriced for what they are, and the company ethics wrt paid content on social media channels makes them dodgy and has me refusing to buy anything from them again.
Just OK:
Pai Echium BioRejuvenate Eye Cream - Gentle and soothing but not terribly exciting.
Verso Day Cream SPF 15 - I actually like this a lot just not at the price they're asking for it.
Vintner's Daughter- as above, liked this a whole lot but the price is only suitable for the insane those with proper dullness issues.
Chantecaille eyebrow gel - it pains me to slathe this, can't really evaluate the hair growth claims as of yet as it's too early but as an eyebrow gel it's pants. I use it as an eyebrow conditioning product at night now instead. Back to the eyeko eyebrow gel it is.
Still needed:
Something with Galactomyces/Saccharomyces to replace my Missha FTE
Happy to give away/trade:
Oskia Renaissance Cleansing Gel (40ml)- think it's good to use up within the next two months, don't know how much is left in it though, tried to reintroduce several times.
Odacite Ba + S sample- used once so plenty left for anyone who wants to try it.
Philip Kingsley Swimcap protective cream (75ml) - never used, good for those who swim often and helps protect the hair from chlorine, sun, and sea damage. Maybe something for you @SaltySeaBird?
Elemis Superfood Facial Oil- largeish sample, unused.
Sachet samples :
Clinique Smart Custom Repair eye treatment
Clinique Smart Custom Repair - serum
Lancome Visionanaire Advanced Multi Correcting Cream
Exuviance (Neostrata) Multi Protective Day Cream SPF 20
Exuviance (Neostrata) Ultra Restorative Cream
Clinique Pep-start hydrorysg moisturizer
Dr. Brandt Oxygen facial - this is very weird, for those who like a tingly experience
I have a bunch of deluxe sample too, Clarins, Chanel, Estee Lauder, mostly but I don't keep track of those or whether I've tried them or not so am wary to be sending those of, so think the bin is where they will go.
If trading, looking for the following:
I don't really need anything but if anyone happens to have a P&M Superstar Retinoil sample I'll happily take that, also tend to hoard the Aurelia Miracle Cleanser travel size samples.
Totally thought I'd have more to give away but most of it is over the proper use date so I won't be taking any risks with that.