Please do make sure that the logo meets the iTunes podcast logo guidelines, listed here under Artwork - http://itunespartner.apple.com/en/podcasts/faq
Otherwise I'm looking forward to your designs! Do consider checking out the top podcasts on iTunes. I would love a logo that brings out the spirit of LED, and which stands out among podcast logos.
You can see my current logo on my itunes feed (it's horrible, I made it myself and I have no idea about this) - https://itunes.apple.com/us/podcast…59321?mt=2
While my podcast is currently focused mostly on talking about various careers, I'm also broadening it to talk about how to do well etc.
Also - I refer to Learn Educate Discover as LED quite a bit. In the future, there might be a lot of other podcasts that are under the LED umbrella, that are focused on other related aspects. Eg: I have a podcast called Just Connect that is focused on how to build your network, which is under the LED umbrella - https://itunes.apple.com/us/podcast…82202?mt=2
So essentially, the logo should be designed in a way that "sub-umbrella" logos can be designed.