I think that the removed feature in which you could choose the theme of the site should be added back. This way, people who liked the 2.0, 3.0, and 4.0 themes can still use them while the people who like 5.0 can keep it. Win-win for everyone.
Support! I always kinda liked how the site theme in a season was like halloween, winter, etc. but they removed it and kinda made the site look a little dull. I really hope they bring this back! =)
y u do dis
Support! Make it default to 5.0 to make a good impression of people who think "Can I make money off this?" and let 2.0 and etc be there for casual or hardcore fans.
Get Stylish for Chrome.
If you don't have Chrome, get Chrome. It's a browser extension that lets you get website themes for YouTube, ROBLOX, etc.
If you can't get Chrome, cry me a river. -_-