@freakazoid The problem with VT100 is every character you type is relayed back to the peer, which will make inefficient use of slower links. Basically, you'd need a link that can support at least 100 1-octet packets every second to keep up. Figure, 25 bytes per frame, so 20kbps minimum channel data rate.
With a block mode terminal, all of your edits are sent back as a single batch. @drwho @email@example.com