I think the main issue isn't just that it's mostly bug fixing and small additions. The main issue is that it was hyped up as a huge event for Themyscira and would be super ambitious! But they had to push it back.
If it were marketed to us as being mainly a bug fixing update, sure people would be disappointed at first but when the update is released we would have gotten what was promised.
Unfortunately SR7/GG have a tendency of biting off more than they can chew. It's awesome that they're trying to add stuff for us that's this big but if you keep underestimating the time and energy needed to complete said task then the result will be the same: delayed/incomplete update and a disappointed fanbase...
Sorry for the rant guys