Cuba under Castro is not a significant strategic problem for the US, the ongoing upsurge of Socialism in Central and South America is. Want to give rising tide of left-wing leaders a few tens of millions more supporters and an extra decade or two in office? Hand over the post-Communist transition in Cuba to the more radical members of the exile community.
That is even worse. Treat 11 million cubans as pawns in international geopolitics. I sure hope your state department days are past.