BPS Pro already protects the uploads folder/directory with the Uploads Anti-Exploit Guard (UAEG).
If you use the wp-content one-click hardening option in Sucuri then you will break the functionality of a lot of plugins including BPS Pro. The BPS Pro Plugin Firewall protects the /plugins folder and if we one day decide to expand that protection to the /wp-content root folder then in order to do this without breaking and blocking other plugins functionality then the same whitelisting methods that are used for the Plugin Firewall to whitelist other plugin’s scripts would need to be created for the /wp-content folder. The Sucuri wp-content one-click hardening option does not include a way to whitelist anything so that is why it will break the functionality of other plugins.
BUT 99% of all attacks in the /wp-content folder target the /plugins folder so most likely adding a Firewall in the root of the /wp-content folder is not necessary.
It is fine to use the Sucuri wp-includes one-click hardening option and I am pretty sure that this will not break other plugin’s functionality or affect WordPress adversely. We will look at adding something like this. It will require research and testing so this could take a very long time to add if this security option has value.