Descent, now with Open Type Hierarchy

[BCS]

Major suggestion:

The auto compleat drop down is very un-aggressive. I'd love to see it be 
Google style sort based rather than ordered-list/browse based.

The kind of thing I'm thinking of is having a live sort of the options based 
on (among other things) what you have typed and the current context. For 
instance, pull things to the top of the list that are of the correct type 
for this context (or to a lesser extent, if they have members that are of 
the correct type), and do infix matches rather than just prefix matches. 
Also nice would be history based sorting (the more often I use something, 
the higher up it is).