Verilog, VHDL, and stuff like SystemC are where it's for chip design. Text does have some real advantages for designing systems.
If you like graphical, the only truly successful example I can think of is [link|http://www.ni.com/labview/|this dataflow language]. Maybe you could add its [link|http://www.home.agilent.com/USeng/nav/pd.html?CT=PRODUCT&ID=588957&cmpid=95203|competitor] and [link|http://www.measurementcomputing.com/cbicatalog/cbiproduct.asp?dept%5Fid=333&pf%5Fid=1357|former competitor]
The analogy to hardware design (electrical and mechanical) doesn't work well, either. I don't see secretaries designing circuit boards. And, despite part libraries of [link|http://www.misumi-europe.com/|over 500000 parts] I don't see secretaries designing mechanical machines either. It still takes a lot of skill, and a lot of custom mechanical parts to glue everything together -- I see it happen every day.