Make Intellisense snappier
Intellisense for VB, C#, C++ should be faster.
By the way, also make Intellisence from a C# project able to pick C++ changes without explicit recompilation.
This is a huge issue on large C++ solutions. I right click and choose "Go to Definition" and then get a popup saying it's parsing x of 900000 files, which ticks up at about 3k files per second. This is a real productivity killer.
David Cole commented
I don't know about VB and C#, but on large C++ projects Intellisense certainly isn't snappy. A different side of the problem is that after you type something and wait for the Intellisense to pop up its prompt, it frequently does not pop up anything.