A lot depends on the turns to your final stand (which can be changed at the last moment), slope, the aircraft's weight, stuff you might blow over as you increase power on the one engine to get round a turn or up the slope etc etc.
Yes, a great idea when thought about a bluntie sitting at a desk - saves fuel, noise, et-bloody-cetera. Requires a bit of thought before doing it ...... our checklist says "consider" shutting down one (of 2) engine on taxy-in. Leaves the decision with the crew ...... where it should be.