@springbok449
Yes, you'd think so but so often you see aircraft calling for taxi whilst the ground crew are still unhitching the tow bar or still under the aircraft.
I'm sure a large UK airline had an incident a few years ago where the "lifter" tug broke down infront of the No2 engine after disconnection.....dark, not clear, taxied and dragged the engine over the stranded tug lifter arms - ouch!
If you see them all clear, over the line....it won't happen. Simples!!
@Arewerunning
no reason to wait for the after start checklist.
I humbly disagree - one thing at a time - doing the checklist is a distractor. Nothing wrong with after start items/actions (flaps, trim etc) as they are coincident with the ground crew disconnecting everything downstairs - but wait until everyone is clear, then the after start checks and then taxi........K.I.S (Keep It Safe)