I know you are probably beating yourself up, but really you have approached your edits and additions so very thoughtfully (as usual!)!
If athleisure makes you feel comfortable and happy in the gloomy end of winter (why does January feel like it's 78 days long?), then by-golly, your athleisure should be nothing short of plentiful and fabulous!!
Plentiful to avoid laundry bottlenecks and early demise, and fabulous because you SHOULD feel fabulous when the weather is just rotten.
No need to slum around in tatty bits if you already have the winter blahs, ya know?