So, I downloaded 5-6 different Image Gallery apps (I stuck with the highest rated ones and avoided the rest). What I found was the majority of them still wouldn't offer what I wanted out of a Gallery. But I did come up with a workaround solution, but it required using two different apps that have no connection to each other. The first app allowed for Renaming Folders (something no other app I've come across has. It's a feature that you would expect to be in every app. Seriously, how the f*ck is it that something as simple as Renaming doesn't exist?). So with QuickPic, I can do just that. But I don't like the interface. It's boring, dull and doesn't offer much else. The second app is Piktures. This app has everything I want in a Gallery App. Everything but the option to Rename (Ugh!).
So, I have to rename in the 1st app, but for whatever reason, it update's in the 2nd app. Go figure. The thing I really dig about Piktures is that I get to Set the Thumbnail for each folder. Also, it allows me to drag and move folders wherever I want in the List hierarchy, which was/is a must for me. I'm also able to hide folders so that if I want to shorten the list (so as to not have to scroll though a bunch of other folders, I can do that and save time). Another cool and useful function is that when you open any folder, you can change the grid settings which I haven't seen anywhere else. So, this is the best I've been able to find and even though I have to use two different apps, I now have what I want. Give them a try.