I get the general idea of this Trek touring bike, but where are the mud-guards (fenders) and why oh why drop handle bars? Unless you're into down hill racing or fancy yourself in the Tour de France, no one on a long distance bike ride needs drop bars - IMHO. And unless you enjoy a wet ass, fenders are a great invention. It looks like Trek are just jumping - belatedly - on the rising popularity of bike touring but are still stuck in mountain bike mode. Otherwise, not a bad bike.
I like the variety of hand positions you get with drops (my 520 has 50K on it so far) As for fenders I'm agnostic: they are a nuisance when you take the front wheel off to fix a flat, if you are touring with somebody you like it's nice for them to have a rear fender with a mud flap (aka buddy flap), they are a bit of added weight, mine are SKS and Trek might balk at the cost. That said in most cases a back rack and its contents acts like a fender to keep your bum dry but does nothing for your wife behind you.
I like the idea of disk brakes, the Single Digit SD-7s that came with mine were utter rubbish. Braking on a steep hill was like planning for retirement, you had to plan it so far ahead. And they were very
noisy, toe-in and all kinds of pads notwithstanding. I replaced the front SD-7 with a Single Digit Ultimate
and it's like night and day i.e. it works and is silent. The SD-7 is adequate for the back. As you can see it wasn't cheap.