Yes please! This would be a great addition for those of us who are portable and not fully automated.
I do image quite often using camera lenses, and they are notoriously difficult to focus. Currently, I focus using the Frame and Focus and Fine Focus tools on Nebulosity 3. They have a decent HFR readout/graph. Then when my image is as sharp as possible, I turn on SGP and start my sequence.
SGP is the imagers best friend. I could not do without it. Inclusion of live view HFR in the Frame and Focus module would be the proverbial cake icing.