No,no. In IP you can’t change basic UI but place the icons as a shortcut on top. It’s simple and quickly changed again.
But coming back to topic. No shortcut is left at the cube, I am afraid.
The once in use are working very well now.
Tap for a specific view, double tap for frame, long press for lock is coming. Those are making sense.
So some icons would be great.
The other option could be a free to adjust quick menu, like in Maya. But this isn’t as fast as it is pretending to be in my opinion.