I'm not quite sure where to go with the server idea, plus if you ask me, a logo should never have a real (looking) picture/photo. It needs to stand out, be easy to remember/recognize, and support the general image of your 'brand'. In my mind that sounds like reliability and trust, which I translate to clean lines, nothing overly complicated, and definitely not pretentious.

Anyway, my idea is along these lines:

At the moment Bitcoin is too hard to understand to go mainstream, Bitcoin is treated as an investment, and being the first significant player in the market is something both helps and hinders Bitcoin.
My main expectation is that over the next few years we will see a range of cryptocurrencies and potentially other forms of digital currency develop, we have all seen posts on some of the issues inherent in Bitcoin's code and processes to know that it is not perfect. I'm not saying any currency ever will be, but I do believe a more mainstream currency will eventually take the main stage. Investing in Bitcoin now and expecting value to settle between $500-$2000 over the next few years I would put my money on keeping eyes open on what is happening with other currencies and as soon as big tech/retailspublicly back these exchange bitcoins for what will likely be the digital currency of the future.