RE: Gyros for 3D flying?
Just practice. You are not going to get where you want to go with a shortcut.
Put one in a UCD .46 with an os .71 surpass and found out that it actually was more stable in a hover when I simply moved the CG way back than it ever was with a heading hold gyro.
Plus, one day I accidentally reversed my elevator by messing with the programming. I got out of it safely but it was definitely a "... huh" moment.