In VS2008 I could delete a linked file from a project under source control and this would only trigger a pending change for my vbproj file. If I do the same in VS2010 this triggers a pending change for the actual delete of the linked file. This is not how it should work, because I don't want to delete the file, it's still needed in an other project. I just want to remove the link to the file

Allow more than just strings as parameters to type providers. Streams and Quotations are examples that would make them far more usable. Wrt Streams, the XML, JSON, and other parser-style type providers would really benefit.

Allow you to create folders and add files from the web UI.
Web UI is too basic in functionality

Expression trees offer a very good alternative to direct IL generation, they are much easier to write and debug. Yet, for some reason, they attempt to enforce C# language rules instead of allowing the same functionality as reflection and IL.

When deserializing an array of structs T, if the struct contains a readonly field, there are no way to initialize it except through the use of IL or reflection.

Expression.Assign( fieldOfStructInArrayExpression , newValueExpression )
throws ArgumentException "Expression must be writeable"

Disscussion is at http://stackoverflow.com/questions/9930459/how-to-initialize-a-struct-in-array-with-readonly-values-using-expression-trees

The feature pack 2 and the support for the Firefox was a great advance, however the Firefox has been updated and the adoption of Chrome is increasing and all the time that I show MTM for my customers, the first question is "Do you support Chrome and Firefox?".

It's unnecessary say that, sometimes it is a blocker.

Currently, a bug has 3 states, Approved, Committed, and Done. I would like another state related to items entered that end up being unfounded, or works as designed. We generate release notes from Bug entries, and the state does not identify if its a valid bug or not without opening it up, which can get time consuming. If we had an option such as Works as Designed, it would save us a lot of time.

.Net 4.5 has a new type IReadOnlyCollection<'T> and list<'T> (a.k.a. FSharpList<'T>) fits this interface precisely, so I think it should implement it.

In the testsettings of VS there are absolute paths used for the test setup & the test cleanup scripts.
This is annoying I think when moving the solution (and also as a matter of principle ... )
The deployment items in the testsettings for example do have a relative path. (of course)

Currently I use excel to create and edit all test cases, then I paste them into MTM TCs because its very difficult to write multiple test cases with only being able to view 4 rows of test steps.

Please create some kind of certificate that my silverlight based application can send you to disable the keyboard events limitation in fullscreen mode.

I will bake everyone a cookie if you'll help me :)

like any recently Microsoft products like WWF 4, WPF,Silverlight, Metro style, I suggest you, Implement Reporting in XAML, or porting RDF file and provide (native xaml base) controls, for using in WPF and silverlight application.

The behaviour of VS2010 right now is that if you remove a project from a solution and other projects reference it then VS will remove the project reference from all the projects including checking them out of source control WITHOUT any confirmation!
VS should warn the user that the project is being used and ask for confirmation.

Right now, if you have a solution with two projects A & B when A depend on B and you compile the solution then A will be compiled even if B failed compilation.
It would be nice to have an option to prevent this.

For example:
Test<T>(T mask, T flag) where T : enum

It's a bit irritating that the compiler can't seperate enums from other value types.