I hear you! What's with the high crew necks on almost all gear tees? I have one from Lulu that I like, but that's it. And I'm constantly checking them out. Have you tried Icebreaker or brands like that? Merino wool is fantastic for hiking. Wicks, breathes, doesn't retain odour... I do find it a bit warm when it's stinking hot out, but is great for most temps that I'd be interested in hiking in.
Backpacks... hard to avoid whatever unflattering things they do. I do think a shorter skort might help proportions. I like to hike in hiking shorts, with pockets on the legs, so I can have quick access to things like a p&s camera, snack, that sort of thing and I find the hip belt of a pack often restricts access to pockets. Now they do NO favours!