cjh, thank you for this thread--and for your nifty summary in the beginning. I am in dire need of managing my wardrobe both from a space-tidying-up perspective and from a what-to-wear angle.
My guess is that probably a mix of strategies will be helpful to me. I already do Outfit Lineup. I need to do a Big Purge (just started reading the Kondo book after learning about it in La Belle Demimondaine's thread). I want to try out a Capsule. I would never do the limiting options, even though I prefer a small to medium-sized wardrobe.
I imagine it would be good for me to do an analysis of my wardrobe (quantity and quality) but I can never find the time.

Wardrobe building via a combination of capsules, frequency of wear, and one in/one out. I'm trying to establish a baseline for how many of each type of item I need and use each season. I'm also adhering to one in/at least one out. I'm interested to see what my wardrobe numbers are in another couple of years.

Great post!

I do not have a firm strategy but probably elements of

Outfit Lineup - I often repeat outfits and tend to have a statement piece I can only wear with one other thing (often jeans). I will then usually wear the same footwear.

Trend Update - yes I do try and keep abreast and bring in new shapes or new to me pieces. In 2014 it was two pairs of patterned trousers, draped asymmetric hems, and several sheer pieces (or sheer in part).

What I am thinking about is the French system of a certain number of pieces per season. Last year I added 23 items to the wardrobe (excluding exercise gear, underwear, socks and accessories) but including footwear and handbags. This probably feels about right to me. So I am going to aim for 15-20 over the whole year including bags and footwear. To keep within budget I will thrift some pieces as I want to make sure some of them are genuine quality. This will be a challenge as I do have some gaps due to wear and tear. I am also trying to think about the power of one - one pair of great work classic trousers, one black blazer etc...This does not work for all categories/capsules but works well for others. For example I had a longing for a new swimsuit on holiday. I have one lovely swimsuit, and one practical swimming suit for doing lengths/boogie boarding etc. Since they dry in about 30 minutes I do not need another one. I will wait until one perishes and then replace.

I have some way to go though!

This was such a fun post. I wanted to add one thing. Like Windchime, I am learning that there is a baseline for how many of each type of item I need. I am experimenting to see what that baseline might be for different items/different seasons.

The idea of a baseline is revolutionary to me. It never even occurred to me that there could be a baseline!

I once tried the one-in, one-out strategy. That did absolutely did not work for me. I congratulate those women that practice that strategy. A great idea. Hard for me to implement.

I live in a climate with severe seasons, so I can definitely put things away for a time. I don't usually get rid of things unless they are worn out or if it was ultra trendy and just plain doesn't work any more. Occasionally, if there is a good-will drive, I will thin out nicer things.

I found capsule dressing essential when pregnant. Life was so simple and manageable. I must try to incorporate capsule dressing into my current wardrobe.