If simplicity was the goal of command line interfaces they wouldn't exist. This is not ls or cat, nor is it trying to be. hg might have a better CLI than git, but it still doesn't justify something like gitless.

You need a really compelling reason to layer another level of abstraction on top of git and from what I can tell, having branches be full sets of working files isn't really a good enough reason to make that switch.

Where are the improvements in Gitless exactly? Pretty telling they don't even list them in anywhere.