Have only one theme. If you have a forum with only one theme it always works better due to users getting used to it and knowing that the look is THAT forum. I have always found this effective. If not 1, 2 at maximum just to give some option. 9 is too many I believe.
Fill your default theme with more content.
Have a bigger logo to fill up some space.
A big suggestion would be getting a custom theme designing based off of the adminacess rocket graphic logo I have seen around.
Your site isn't loading for me but that's what I can think of from the top of my head without seeing it in real time/
It should be loading fine now. And thanks for your feedback but I'll be keeping the theme. It cost me $50 so I'm not ditching it anytime soon. Thanks though.