It's hard to make suggestions on who to cosplay because we all have different favorites and different tastes.
Instead, I can suggest some ways to find that cosplay.
1 - Start watching some new anime.
Pick series that you think you might like but haven't seen already. Like, I see that you have done cosplays from Wolf's Rain, bleach and Inuyasha. So I would suggest watching Witch Hunter Robin/Blood +/ Black Butler (for Wolf' Rain), Naruto/Trigun/Soul Eater (For Bleach and Inuyasha). Also Hellsing. Just a great anime. Watching something new will inspire you with new characters.
2 - Choose based on your skill set
Sometimes, it's easy to fall in love with a character with a bad@$$ outfit or prop. But you don't want to take on more than you can chew or get disappointed by tackling something that big if you don't have the skill set yet. Recognize your level and what you can do first. If you are just starting to learn how to sew - DO NOT tackle heavy embroidery. Or if you have only ever made small props out of cardboard, DO NOT tackle a full suit of armor. Put those aside for later..which leads us to...
3 - Make a Future cosplay list.
Once you start watching all these new shows, you are probably going to find a lot of possible cosplay characters. Start making a list (with pictures). It helps so that a) when you are bitten by the cosplay bug again you have somewhere to start looking and
helps you to visualize the kind of projects you plan on tackling in the future. It is also a great way (if you publicise this list) to get help and to see who else might be cosplaying that character or series.
Hope this helps and I look forward to seeing what you are going to cosplay in 2014!