I formulate my opinion on past history, and facts that I have readily available to me.
The fact that Cubans pre-Castro built a solid economy, and the fact that post-Castro they created tremendous wealth as immigrants, is sufficient basis to believe that what was done once there, and once here, will be done there once again. There is no need to migrate back to Cuba to accomplish this, it will be done from here.
The sugar families of Cuba are still in the sugar business today here in the US, and they will return to grow cane there. They will introduce 40 years of modernization and return the island to its rightful place among the sugar giants in the world.