Thanks Katherine! It's weird that some wrinkles are good and some are bad.

Thinking about your comments about mobility and historic clothing: I wonder if the reason that later Regency dresses have sleeves that are gathered into the armscye to deal with the wider backs and shallower armscyes. Also, patterns from extant garments also tend to show a very shallow sleeve cap, which also helps with range of motion, but increases sleeve wrinkles.

I love historic sleeves too! (When I get them right. ;p)