Personally, I don't think giving Chima another run would be necessary.
This is coming from someone who followed Chima avidly at the time- albeit I went back and forth on whether I actually LIKED it, but I certainly did keep up with it. It was an interesting concept with plenty of potential, but they really ruined it in execution as seems to be the case with many story driven Lego themes in recent years. If I wanted to see Chima done better or expanded upon, I'd put it off until Lego changes their philosophy regarding original stories.
And even then, something about it still doesn't seem very viable to me. I guess it could have been that the sloppy execution left me sour on it, but the thought of getting it back just doesn't strike me as terribly exciting. Looking at what's become of my Chima collection, it's really just ended up shelf warming in my closet or broken down for moccing. I never display my sets or figures or anything. Interest in it kinda just evaporated for me when the show ended.
So uh, short answer, no I'd rather not see a Chima G2.