The Mark as Answer check is too subtle for me. I tend to tune out things in gray and can be icon-blind. After reading an answer, my eyes are at the bottom of the answer.
I imagine that frequent askers in this network remember about the checkmark, but I ask only a few times a year. Someone just answered my question, I looked for a place to mark it answered, and could not find it, so just replied that they answered the question. When they replied that I needed to mark the question as answered, I looked again and still could not find it. I literally did not notice the checkmark. I had to Google how to accomplish that.
It would be better if there were a link with the words "mark as answer" at the bottom of each answer next to the "share" link. That's where I would have expected to see it.
It's fine if the checkmark remains, but it would be much better if there were also a text link together with the other text links.
Would you please consider this improvement?