Need Help Finding a Main

Hello, I have been a support main ever since I started my League adventure in season 4's preseason. I joined as part of a casual team of friends from my university and I was paired with my best friend who was adc. I've thoroughly enjoyed my time as support and have learned valuable lessons from the role such as higher map awareness, positioning and how to kite and peel and whatnot. However recently I have been getting quite bored with the role. I don't mind supporting my friend if we're doing flex but I can't stand solo queue as support anymore. My only issue is I don't know what other role I would want to main. I believe I'm proficient at ever role (at least proficient enough for my elo) but I enjoy them all to a certain degree.

Here are my favorite champions of every role:

Top - Nasus, Fiora, Renekton, Pantheon Jungle - Lee Sin, Hecarim, Mid - Akali, Veigar, Twisted Fate ADC - Miss Fortune, Ezreal, Sivir Support - Thresh, Janna, Bard

I know that one of the more common solutions is "main who you enjoy playing" but I love playing all of these champions from time to time. Any suggestions or advice would be greatly appreciated.

By the way I am currently Bronze II, nearly Bronze I.