notes:
1. i think the difficulty with the card return on Goko is that typically (with say apothecary) you're very concerned about what you will draw NEXT when you compute what order the cards go back in, so you have to click on the opposite of what you computed in your head. the BSW/iso method seemed more logical to me. Not that Goko is fatally confusing, just that it requires the sort of work I'd rather do on paper.
2. i don't think governor or tournament are particularly high skill cards, simply because they're so powerful. i'd wager that winning the gov. split 6-4 (early) is more important than making the right decision (assuming you are making competent decisions, i.e. not remodelling coppers into estates). actually, maybe just first player. same with tournament. there are a lot of skill questions in a tournament game, but the problem is that "just spam tournament" is a decent strategy.
3. contrast ambassador, which is also a powerful card but requires high skill
4. or expand, which is a weak card that requires high skill.
5. or treasury.