It really depends on your user base. Bitshares will most likely have a diverse set of users who will require many different types of interfaces. Eventually, part of the target audience are guys like this:
The initial screen for tradars and investors may be a bit more advanced, such as the initial screen for poloniex (which has gained quite a bit of market share lately), td ameritrade, or any of the other leading online trading interfaces.
However, I largely agree that initially the interface should be simple with advanced features just a click away. As the system develops, more interfaces can be developed, catering to the casual user who just wants to send and receive bts to the sophisticated trader who utilizes many of the advanced trading functions available on advanced trading platforms today.
thats more like a dashboard. I agree with op and his comments but the meat of the innovation is in the core code.. however for avg joes the interface is all they care about. Look UI is hard and often overlooked... it takes years and many iterations to get right unless your a seasoned UI expert. I think its getting closer but the simple mode is needed while advanced should be an option not mandatory.
It dont think it would be very hard to do this so perhaps while bts2.1 gets done the next ui can actually do this.