i got a reply form rep in the french forum topic (google translate) :
Hello!

Unfortunately at the moment it is impossible to give details on a possible overhaul of the server or the optimization of the graphics engine. I can just confirm again that everything is made ​​to ensure that features like better administration tools linkshell emerge as soon as possible. It is the same for improved game performance at both graphic network.

I'm really sorry not being able to provide more information.