The encoder feels still a bit unresponsive if turned to slow or to fast, but however - using a encoder is not the most significant for my project.

Actually i'm looking for a ministick that doesn't move in a circle but instead in a squared window.
Imagine the red line on this pic as the cutout.

The usual gamepad like ministicks are all moving in a circle, which results in reduced max deflection values on X and Y axes, when moving the stick diagonal.
Thats really bad for a strafing stick (i want to use the controller in Star Citizen).
Does anybody know, if such kind of ministick i'm looking for, is somewhere available at all?

Btw - here are some Pics of my Project.
http://imgur.com/a/RgFJd
It's planned as a expansion for my dual stick + rudderpedals setup.