I thought of something that may make the f more obvious.
Rather than an outline, I though an 'inline' might look a bit better.
Anyway, here is my modification:
http://www.geocities.com/tejas_dinkar/FedoraLogo.png
It is a quick job with kpaint, so it is a bit boxish inside. It needs to be
redone.
Also, if we write In 'f' inite Freedom, replacing the f again with the logo,
it may help people understand the meaning of the symbol
Just my $0.02