@makermonstr
My gut feeling reading the description / benefits is this would be a "nice to have".
For most mills / routers / plasma tables the X and Y axis should be able to move at approximately the same speed. The Z axis should be able to move at a similar speed, may not be as fast but not slower than 50% of the X/Y axis (if the mass of the head is an issue then investigate a counter weight arrangement to reduce the static load).
If your setup has a 4th/5th axis where homing has speed issues (degrees rotation is very different to mm/inch for the X/Y/Z) then it would carry more urgency.
Perhaps instead of "feed rate" it should be a percentage of the axis maximum feed rate. I suspect the individual axis maximum feed rate is likely to be proportional to your desired homing speed.