Absolutely! More features like this are coming.
When a plugin is new like this, it’s important to make sure the initial way you include options is the ‘right’ way, or else you can back yourself into a corner when it comes to improvements in the future.
The next WPSP Pro update will be a big one 🙂
As for upgrading, you can do so in your account: https://wpshowposts.com/account – just click on “View Licenses” and you should find the link there 🙂