First time I see "Dimetric", "trimetric"...
Not very well known terms, but the concepts have been discussed for a very long time.
There will be some options under Cube menu... -> Settings. In addition to adding such settings i need to prepare an upstream oriented PR, adding some additional parameters to the NaviCube code itself.
By default there are now a few more items added to the navigation cube menu by default, once one installs CubeMenu. If it makes sense to add or remove an item or two, feel free to propose.
You can use left mouse button to drag navicube position. I donont kown whether its your intention.