I just browsed through all the pictures and seems (maybe it is just me looking at them from a alpine enviroment related spanish guy) that most folks here focus into military oriented gear. I am pretty sure that it is the most bombproof stuff you can get but they feature a lot of stuff I am not sure if they are that handy.
EXTERNAL POUCHES/WEBBINGS/BUCLES: Seems like most of you hike in forrest/jungle areas, don't do all those webbings, buckles, external pouches and alike tangle into debrish, low branches and alike? Seems to me that packs with cleaner lines may be more "forrest friendly". I also hate tangling gear. I can see the point where guys in the military have the need to reach some of their gear right now. Doesn't make much sense to carry spare mags in the backpack, does it? The only thing I carry on the outside are usually my crampons after using them, so I don't get everything wet. If we have been into a snow storm and everything is wet already, I don't give a damn and stash them inside anyway.
COLOR: I like camo/green/black stuff myself but between that and the high visibility orange there is a vast arrange of different colors that could help locating you in the event of getting hurt. Or even to find your pack if you somehow loose ir or something.
WEIGHT/DURABILITY: This is all about tradeoffs. The stronger built it is, the longer it should last (at least it should be that way) but the heavier it will be when empty. Same goes for internal pockets, the more there are, the easier it should be to keep everything organized but the heavier is going to be (plus you will loose room inside). Today space age materials allows us to make very lightweight packs that give a great support and last longer than you expect (kevlar, dinema, etc). I am all out for big zippers that work even when frozen up with mitten friendly zipper pulls, boombproof stitching but I try to stay away from multiple pockets and heavy reinforcements. Single compartment, with narrow compression straps for me! So far I haven't broken any of my packs. When I get a new one is just for the hell of it or because it is ligther than my other ones or maybe better suited.
That said I still use a 40l Magic Rock pack from Vaude that has endured lots of alpine climbs, dragging on rock, rock falls, freezings and all shorts of dissasters. It is still going strong and I bet that now there is ligther and stronger packs out there. I also have a Decathlon 60l pack I got as a gift. It is not as light as I wanted and I could do without the full length zipper. Not a bad pack but I had to cut and sew longer compression straps to hold my sleeping pad. I also cut the bladder tube holders made of plastic and sew some rubber loops. The velcro holders for the ice axes also suck big time, so I cut them off and fitted something better. I usually mod anything I buy. Seems like nothing is perfect right out of the box!
Mikel
PD: I really like the packs shown here, seriously. I don't intend to critizice anyone or anything, this is just my point of view! I just think that given the stuff some of you carry and the intended use, maybe it is worth having a look at not so military oriented gear... even if they come in pink!