As New Englander I feel it's important to note that there are, like olive oil, various grades of maple syrup. They changed the system but Grade B / Dark maple syrup is the best for pancakes and "thickness". If you want to make a sauce or cook with it, golden or amber are fine.
It's made Grade B more widely available though, because now it's just a light or dark choice like brown sugar, whereas before Grade B seemed somehow inferior. Before it was easy to assume Grade-A would be the most maple-y.
Hmm, weird. I've not found real maple syrup to be too runny. (But then, I haven't had the fake stuff in decades... maybe they add a bunch of thickener to it.)