As we have to use apache, i don't like to go for an aditional nginx proxy just to simulate HTTP/2 ;-)

I think apache is capable to handel HTTP/2 :-D

Some of security configuration requires GeoIP detection. It also useful for tracing and should be easy as adding '--with-http-geoip-module' option to configure command for the package.

Please, consider to implement some sort of cache purge functionality available from Plesk web interface, because if cache TTL gets extended to match Site needs, it gets complicated, i.e. need to go over Linux Terminal to purge it. A Wordpress integration would be just super fantastic, but I understand, it is not realistic to wish it.
Thank you!

Please add PHP Composer to chrooted Environments.
Many Customers Need PHP Composer to install various scripts, cms Systems and libaries.

A current big Problem is the new typo-neos System - you must use Composer to install at sources correctly

A other Problem are PHP API's and Libaries like Payment Companies like PAYMILL etc..

Have the ability to provide more Nginx builds/packages. For example, offer a 'nginx-full'-package with more modules.

For example, I need the Nginx headers more module. Since this need to be built-in at compile time, it isn't possible to add this later on. So that would mean replace the Plesk version of Nginx with the distro-default. (Heck, why does Plesk need it's own Nginx-build, anyway?)

No, passing headers from Apache is not an option, especially when I'm using the Nginx - PHP-FPM setup.

A customer would like to be able to assign different PHP versions for different directories inside one the the same webspace.
For example,
/var/www/vhosts/example.com/httpdocs - php5.3.3
/var/www/vhosts/example.com/httpdocs/test - php5.2.17
/var/www/vhosts/example.com/httpdocs/test2 - php5.6.12

am not understand, when i want to move a Domain, the system will delete all the content. The choice to leave the content, I think is essential. This has to be a must!!!

id like to see these tools implemented into plesk. To run server wide or domain wide, and via cron if required.

Alot of large organisations are using these tools. (facebook etc etc)

I like to see image optimization part of plesk admin panel. It will help servers run faster and optimize web delivery.

Currently, management of additional Apache/nginx directives is available for Plesk Administrators only.

With Apache, it is possible for users to add custom directives via .htaccess file.

However, when running a Plesk server with nginx only hosting and a large number of customers, it takes a lot if time to configure nginx directives manually for each.

It is clear that additional Apache/nginx directives fields are hidden from Plesk users for security reasons, but it would be great to have an ability to enable this feature at your own risk.

Previous same suggestions that have been marked as "declined":
https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/34285378
https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/38760889
https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/19087582

Add server-wide custom error pages configuration via Plesk UI.

Per-domain solution is her: https://support.plesk.com/hc/en-us/articles/213370209-How-to-enable-custom-error-pages-for-a-domain-in-Plesk

For debugging PHP-FPM can log slow scripts. It would be great if you could manage this feature via Plesk.

Support CORS policies management by Plesk on Windows. Ability to add additional headers via Plesk.

Currently it is possible only on Plesk for Linux.

Application-Layer Protocol Negotiation (ALPN) Support where good.

To ensure the best possible compatibility of support would be very good here.
Of course, this is not a priority but would be good.
So could the future https, http, be http / 2 Easy granted.

Implement client SSL certificates for authentication

Please can you include a version of nginx compiled with the following modules (that are required for pseudostreaming support)

--with-httpsecurelinkmodule
--with-httpmp4module
--with-httpflv_module

Directions for nginx pseudostreaming compile at: https://gist.github.com/mikhailov/3174601 also indicate the following needed/should be included:

--with-pcre=/usr/src/pcre-8.32 --with-openssl-opt=no-krb5 --with-openssl=/usr/src/openssl-1.0.1g --with-httpsslmodule --with-httpstubstatus_module

For reference, these are the modules included with the present Plesk 1.6 nginx module:

--with-ipv6 --with-file-aio --with-httpsslmodule --with-httprealipmodule --with-httpsubmodule --with-httpdavmodule --with-httpgzipstaticmodule --with-httpstubstatusmodule

I would like to compare HTTP to HTTPS traffic and IPv4 to IPv6 traffic. The data should be in the logs, but it is currently not displayed.

Please, implement managing of URL rewrites of domains in Plesk. Currently it is possible to do only via editing web.config or in IIS via URL Rewrite.