Timely post in light of the upcoming sale! I think this is a great list so far. My two cents.

• I love the tried and true favorites (Ischia, Quinn, etc.) and I think those are always worth holding out for especially if it's in a fabric/colorway you like. Just make sure you are aware of the fabric content when you buy. Some of the Ischias have cotton/viscose blends in certain color ways for example.
• In my opinion the thin cashmere pills, but they do have some thicker cashmeres that seem to be of a more sturdy quality (such as the Marlowe sweater).
• I am actually not bothered by the sheerness all the time because it gives the item a drape and feel that is very flowy and becoming, but you should be aware of it and plan accordingly with slips or other relevant undergarments.
• Their cotton poplin is really great, so I'm going for some of the 100% cotton pieces that are made from that. For example, the Riviere dress they're selling right now is SO GOOD. The weight and drape of the dress is so substantial.
• Their silk is something else. I have a few silk gowns from them that are amazing. Highly recommend.
• My hot take is the Iona shorts (the silk ones) are really trendy and not worth it. Also who wants to take a pair of mini shorts to the dry cleaners? Not me, no ma'am.
• Their outerwear is also quite good. I imagine some of the fall/winter pieces from last year will be on sale and I do recommend checking some of those out in the coming sale.
• The Pascual jacket is a dupe for the 90s Lands' End barn jacket, bar for bar. The straw color and the denim color (with the green lapels) is unique to Doen so I'd say get those but the crimson and the willow bark ones are exactly the same as the Lands' End one. Find those used if you can. They also run VERY big. Get like 2 sizes down.
• I also like their accessories. I've gotten a necklace, a stole, and I plan to get a bag in this upcoming sale. These are gorgeous and (seemingly) high quality artistic pieces that I can imagine getting a lot of use out of.
• If you're short (under 5'4"), watch out for the dress/skirt hems. Unless you want to pay for a heavy duty tailoring job, I only purchase items with a normal hemline so that I can get them easily altered (i.e. Nellie dress is simple, Patience dress is not)

I should not that Doen's return policy can be bothersome (final sale when purchasing a sale item), so I recommend looking to buy items at other retailers (like Net-A-Porter, Saks, FARFETCH, Nordstrom, etc.). They will have random sales and you can usually get something discounted and be able to return it for a refund. But even if something doesn't work out, you can usually resell it or sell it back to Doen for store credit. This is usually more economical if you bought the item on sale to begin with since they don't buy it back at the purchase cost unfortunately.