For me it is not a question of ugly icons. Some of the menus are very unfriendly. I'd like to be able to put 4 buttons on the desktop (like memory dots) that switch IK on and off.

The mirror commands ask you if you want to copy joint params EACH TIME you use them. I wish they had at least 2 separate mirror commands: copy with joint params and without.
In several cases the UI seems designed to slow you down.

In Silo you can set up everything. I stuck to the common setting of alt-left mouse to rotate, and alt-middle mouse to move the camera. The scroll wheel zooms.

Now in P6 there are only a couple of right click menus and there is no use of the scroll wheel.

alt-left mouse actually turns the cursor into a camera and rotates it! Did you know that? I found this by accident. Unfortunately it does not keep the horizon level, so I am back to using the bowling ball.

There is also a DAZ style rotation tool, but I rarely use it. Just habit.