Actually I like Prima's Temple of Heaven design, as I've seen it as a symbol on many stuffs. Tiananmen design may be pedantic(yeah think about some "special" political factors), it would make my face grow solemn when I see it.
Foreigners, you can take a look at the Beijing government English online:
How to stress the symbolic importance of the picture is important, I hope you can grab some ones you like and tell us, then we can start a vote of the submissions to choose the final by the public.
Thanks.
Yours sincerely, Christopher Meng
Noob here.