I'll correct you
. I meant that a coastal Damasqus is unhistorical. Jerusalem's distance 35km is really a minimal number speaking about the maps scale.
Note that every polity that controlled Jerusalem had access to see (Kingdom of Israel, Kingdom of Jerusalem (the crusader state), Republic of Israel). On the contrary controlling Damasqus means exactly the opposite. You don't have access to sea, because Libanon separates you form the sea.
So the different approach (coasted Jerusalem, non-coasted Damasqus) actually plays a historical role in the game and in the gameplay.
This tile 1W of Damasqus represents Lebanon, a polity that played significant role in history, it is represented in the game as a distinct civ and separates Syria form Mediterranian Sea. You can't vanish Lebanon.
In final analysis, I don't see any reason to coast Damasqus. It is unhistorical and distorts the gameplay. Build a fort, or conquer Jerusalem (its just two tiles away).