Yup. I am no great player myself, but I've come to understand that one of the key differences between where I'm at and the next plateau is understanding the value in "bad" cards and when "good" cards aren't. Chapel is the a good example because most people make the first big jump with that card. Then, it becomes an auto-pick, and you start to think "who's this noob" when they don't buy Chapel in the first buy or two.
And then, you encounter the 30+ player who wipes the floor with you and doesn't take Chapel because it's too slow, or doesn't support the big money strategy that is the best available on the board, and you start to think "huh, maybe Chapel isn't a brainless autopick after all."
I assume after this point, additional skill develops. But, the point remains, Chapel doesn't need to be fixed, it's not too powerful. It's power is relative to the skill of the players involved. If you only encounter the noobs who have no idea how good Chapel is in the right deck or are still playing it in Big Money, it may seem like an overpowered card. If that was the deepest Dominion could go, then, yes, Chapel might need a tweak. But Dominion goes far deeper, and eventually, Chapel isn't an auto-buy because it's "good" in the abstract, but a conditional buy when and if it's good in that particular board.