There is an export option for the "plesk ext wp-toolkit --wp-cli":

plesk ext wp-toolkit --wp-cli -instance-id 2 -- export

Starting export process...
Writing to file /var/www/vhosts/example.com/httpdocs/futureinvestments.wordpress.2022-06-03.000.xml
Success: All done with export.
But the import feature require native "wp" utility to be installed, and fails via plesk utility with error:
WordPress Importer needs to be installed. Try 'wp plugin install wordpress-importer --activate'.

Such option (import) in plesk ext wp-toolkit --wp-cli would improve usability

Add the possibility to customize the WordPress Toolkit Set to install WP in a custom directory (e.g., “/wp”) instead of installing it in the root folder (httpdocs)

Reason: The automatic WP installation performed via a WordPress Toolkit Set through a Hosting Plan would work fine if the customer’s current site is not built on WP or another php-based platform, but will fail and mess up their current site if their domain already contains a WP or php-based installation at the root level.

Create option to automatic install Wordpress Multisite domain so clients can have an easy way set up an staging environment

Add the functionality of adding a customer account as a user for a domain not under its subscription in Plesk.

There should be an option to forward mail without letting the customer know it is enabled (to the extent permitted by the law).

Currently, it is possible to hide all mail settings from a service plan or subscription. More granular control to hide mail forwarding only, or an option to enable it separate from the customer's own forwarding settings, would help monitor malicious content.

Plesk introduced the TZST format for backups. The File Manager should have support for this archive format.

Create the option to add a trusted certificate for an external party so MTLS handshake will function properly on domains hosted with Plesk.

Currently the way an IP is chosen from the ip pool allows IPs from alternate interfaces, dedicated IPs, or shared IPs. It would be nice if we had a way to force it to use shared ips for new subscriptions or, just give us a way to set an IP as the default IP for new subscriptions.

Add the ability to change the Application Pool Identities using the Plesk web interface.

Notification "WordPress site vulnerabilities found" should be sent to customer by default. Since customers are the ones who deploy their WordPress websites and should be notified to fix it.

Please develop a "Two-factor verification" option using email and google authentication app or mobile to log in to Plesk for additional security against cyber attacks.

In the UI, at Tools & Settings > Update Settings, it is possible to set a notification to be sent when updates are available or were installed.

In the UI, it is possible to set the notification to be sent either daily or weekly. However, the corresponding CLI option plesk bin notification --update -code adminpumupdates has no option to set the notification frequency. Please add an option to set it via CLI as well.

It is necessary to have cli utility to get outgoing mail limit statistics for previous days, to see mailboxes that tried to exceed their limitation and when.
I want to monitor that with an Script and Cronjob and maybe make some auto actions on that.

Help admins and customers to create a security.txt file when creating a site in Plesk Panel, see https://securitytxt.org/
No details yet.

At this moment it is possible to have a pre-determined set of Plugins to be deployed on WP, it would be useful to also have the Ability to deploy a pre-determined copy of a WordPress website already designed

Please offer nopCommerce as an installation option in web applications.

We're studying for some customer/subscriptions that consume a lot of GB of disk space, to have their own /var/www/vhosts/client as a new disk mount.

It would be nice to have a timer that will show time left to finish the site transfer via Site Import extension.