#1) Regarding mass producing shortcode, currently there is no way.
You can write PHP code to mass produce it. I can point you to the wordpress API and shortcoder API to insert a new shortcode if you really need it.
There was a request to import shortcodes from CSV.
Currently I’m rewriting the plugin from scratch, I’ll implement this feature and you can get this import from different format.
#2) There is no way to change sc name as that is the trigger word for the shortcode. With sc name being same you can change the name="shortcode name" as per your need to keep track of it.