I really need the ability to put connections between single supports. For example, I have several high single supports, which for stiffness would be useful to connect with diagonal jumpers. In the screenshot, I drew them in red lines.
In automatic mode, the program itself puts such jumpers, but in manual mode I can not do this.
And there are still not enough spheres at the junction of supports with the model. Spheres allow breaking off support without risk of obtaining caverns in the model, since support breaks at the boundary of the sphere. The remnants of the spheres are then quite easily removed from the model.