This is excellent. Independent, consumer-empowering size analysis, especially measured over extended wear and washing. I'll be following you.
I wonder if there are any companies that sell inexpensive custom t-shirts? Provide your measurements, specify desired fit, neck type, color, and fabric, and order exactly what you want.
As someone very hard to fit for pants (28" waist and cyclist thighs), I would be thrilled if you also do this for jeans and shorts.