I thought I would start a thread on what folks might want to see in a post-Ariadna world. (i.e. 4.0). Perhaps out of this discussion we could write a set of Change Requests to be considered (or perhaps all the good ideas, are already there, and I just need to be pointed to them :)
1) More effective use of free screen space. I seem to be continuously fighting with IDEA on how to lay out things. I find the psuedo tabbed model a little akward, in that I usually have a significant amount of wasted space in the "corners". I would love to be able to split the screen, and see (for example), debug frame and find usages on the left side. (top/bottom layout), with the code on the right. I've tried the "undocked" mode, and just don't like it.
2) More effective filtering models for the debugger. I want to be able to build custom "renderers", for data types, and when I encounter the datatype, just display those things that I am interested in. This would be most useful in the "Frame" display, where we browse the active variables.
I'm sure there are others, just can't think of them off the top of my head.