How to quickly create multiple Drupal 7 features?
You can use the Drush features add/export commands (add was removed in the latest version of Features (rc1)).  As there have been a lot of changes recently with features rc1 and drush 5.0, the exact commands will differ depending on your setup, but drush help will list the features commands and drush help fe will show you the details (in this case, how to export [e.g., create] a feature).

If you really needed to create a lot of features, you could script Drush (either extend Drush itself or run Drush via bash script, etc.)