A faster but foremost more reliable turn-off of the mosfet, it's pretty common practice. About 2k2 ohms (locally!) per mosfet should be ballpark.
Not that I doubt your skills or would interfere with your design, just being curious!
Where have you seen this done?
Your telling me you want me to tie the 118v battery supply to the gate.... thats what the drain to source difference will become during switching this will try to turn the gate on when its off.
What you are suggesting will be instant death of a controller with anything over 20v on the battery voltage. As you need to understand this will slowly apply more then 20v to the gate. In fact it will slowly charge the gate to full battery voltage! The gates are typically rated for 20v max!
As well. It will slow the turn off down not speed it up. When you turn the fet off the drain voltage will raise if you tie that to the gate it will try to turn the gate back on not off.
Show me examples of this Gate tied to Drain....
Or do you meen Gate tied to Source which is a pull down resistor and will slightly help speed up turn off slightly. But a pull down is actually there just to keep the fet off in a situation when the driver does not have control of it.