And here I am, working over SSH -- every stroke requires a round-trip. Over a high-latency link, that's sometimes a few seconds between a batch of characters appear :-)
Great for being on an intermittent and/or slow link.
I've always pushed for this to be in the remote terminals by default as my prototypes took almost no effort to implement. With plenty of benefit, too, for anyone that values instant feedback! That was a throwaway, though. Thanks for the link to a real app doing it. :)