Have you ever seen an airport at night? The ramp? It’s already a cacophony of flashing lights and rotating beacons and alarms and jet bridge beeps and sirens.
Lights on the engines won’t make a difference but be a feel good.
As stated before…in the rest of the world nobody approaches with a beacon flashing.
After a min or two you may get a polite reminder from the mechanic plugged into the nose gear.