You know, I don't think I would've been that mad if they were at least honest with the increase in fees. Something along the lines of, "In order for us to break even, we need to raise the fees, but we will try to make your selling experience more enjoyable by introducing (said features)" would've been "okay", at least to me. Yes, I'd probably still be upset, but I know I wouldn't have been so crass in my emails to them. It was the tone and lack of honesty that just disgusted me.
That and not play favorites by keeping your business sellers at that 9 percent, which, btw, us hobby sellers are paying for.