I really wish the OP would have worded it, "What do you consider to be a good player." Might have allowed many posters within to have their opinion without catching gripes. Maybe.

Anywho, my standards aren't very high. Just be respectful and polite. If you are respectful and polite, everything else falls into place. Simple as that. These players may not be the most skilled, but I don't care. It is far better than the complacency and dismissive behaviors I encounter from players who are really 'good' at the game. Respectful and polite players don't deliberately ruin the experience for others. Nothing brings players together more than sharing a struggle while being friendly and understanding. It leads to some of the most positive experiences the game has to offer.

In my experience, having a large list of standards only leads to a greater window for disappointment. I like to have fun. Even more so when others are also having a good time.