Some people still don't know that only clonetroopers are clones. Storms are real people. This has been confirmed. The Empire needed so much soldiers that they basically recruited everybody they could find.
The Falcon has a new dish, to replace the one lost during the battle of the second Death Star.
And R2 and C-3PO are coming back. They've just emphasized on the new characters for now. We'll have to wait before seeing familiar faces.

Hope that helps