#3 is one of my biggest gripes, in general. The Gimp is one of the worst products I've ever taken the time to try to learn. I'm not just tweaking photos, I'm trying to do some work as a professional, working on files given to me by other professionals. Forget about trying to open a PSD with more than a couple layers on it. Don't even bother.

And the interface... I don't mind spending a week or two learning an interface if it will allow me to get the job done, but The Gimp makes me want blood. Decent media software is the ONLY reason I keep a Virtual Box image of Windows 7 on my drive. Well, that and the occasional browser testing, but I find that's less of an issue in recent years.

As for hardware, I've run into Very few problems on a few DIY systems and laptops / netbooks. Graphics compatibility has always been an enormous issue. Especially multi-card for 3+ monitors. I assure you it's possible, as I've done it a couple times, but I tend to fall into a slight depression once the battle of getting it to work is over. Otherwise, I've been incredibly lucky. Install and go.

The battery issue is a major one. I've found that Lubuntu keeps up well on my netbook, and I rarely unplug my work notebook, so I don't run into it much, but you're spot on about the importance of getting that right, or at least making the correction simple.

Fine points, overall.