But they could add to him, like they've done for others.
"Pointless" is in the eye of the beholder, I guess. I see reason to expand the known story of MOTU and POP by developing little known characters. If you're not for that, then you're not for JOSH. Or any other little known character.
He isn't a "new" character. He exists already, and can be further developed into something interesting.
And, "Josh" is being singled out (on this thread) because he is:
A. A muscular, heroic type guy.
B. A Rebellion Member.
C. A chance for a second male on the Rebellion team.
D. A chance to add to the story by developing new dynamics.
E. A chance to expand the POP universe.
2. There are key characters within this line that do not possess any special superpowers, but they were given weapons, a job, and in some cases a good name.
3. So it's not about POP, but about girl figures in general? I'm fond of the story potential first and foremost. New and undiscovered characters help that.