If you are going for modern and sleek you need to add elements of this: http://www.hypable.com/2014/05/21/batman-vs-superman-logo/
As it is, it looks way too plain, too 90s.
1 and 1/2 cents...
It needs to be contemporary, but also timeless if such a thing can be achieved.
Minimalism, with correct design and delivery can last ages. Art Deco, 90 years later, still looks fresh.
They achieved this by removing clutter and streamlining, not adding gloss.
Show an example.
https://www.google.co.uk/search?q=art+deco&source=lnms&tbm=isch&sa=X&ei=nD5-U6WVBurW7QaIpICQDQ&sqi=2&ved=0CAYQ_AUoAQ&biw=1920&bih=1008#q=art%20deco%20furniture&revid=2008499395&tbm=isch
Buildings
https://www.google.co.uk/search?q=art+deco&source=lnms&tbm=isch&sa=X&ei=nD5-U6WVBurW7QaIpICQDQ&sqi=2&ved=0CAYQ_AUoAQ&biw=1920&bih=1008#q=art+deco+buildings&tbm=isch
Art & pottery
http://www.vam.ac.uk/page/a/art-deco/
I'll let you find your own way through - it is still popular and stands the test of time.
Compare that to the gothic outburst 50 years earlier.
