That command is pretty pointless, now that you can easily resize people and yourself with events.
Except for some people are too lazy to make a brick, click it, and resize, because if they are killed somehow, they have to do it AGAIN AND AGAIN. :c
We need a seperate command for this. FFC was messed up, and if I want resizeme in my server I don't want people walking around as purple dogs with skeleton heads.