Creator Backlash: Lauren has gone on record to say she no longer likes how the characters look and she wishes to redesign them.
Development Hell: Again, Lauren Faust has pitched an animated series several times before (one such pitch leading to Friendship is Magic), and back in 2007 she claimed to have been working on a short and shared some storyboard art. As of 2015, whatever progress has been made hasn't seen the light of day (probably because the following year Lauren got a certain job with Hasbro). Lauren has said that Galaxy Girls is currently "in stasis" until she can find the right partners.
Doing It for the Art: This is clearly Lauren Faust's dream project, one that she's been working on for over five years.