We have over 200 projects, 2900+ unit tests. It takes over a minute some times to get to the point where it can start listing all the unit tests in the test window, and start executing. We have latest gen Core I7, 8GB 64 bit windows, and it is still a pain. Maybe this area needs 're-imagining', as I can understand the complexities of managing this large number of projects/tests, but it is not working well for us.

As a work item customizer, I want to be able to easily define the Area and/or Iteration path fields as a REQUIRED field (which is not possible today with TFS 2010 easily).

I vote for navigation windows and function/class browser for JavaScript, which we waiting from vs2005

Add a nameof operator in C# like typeof operator.
Syntax:
nameof(<TypeName>),
nameof(<TypeName>.<MemberName>)

It is really required for maintenance as refactoring enabler.

It is wished for notify property change.
I have heard about the CallerInfo attributes BUT here is the key example that show that only a nameof operator will solve all the needs:

We need it in order to fill attributes:
[GlobalizedDescription(typeof(CommonResources), nameof(CommonResources.MyProperty)]

MEF property or method contracts are also obvious example

Make Table inheritance. So developer could make some BaseTable (entity) and a number DerivedTables (entities) witch will inherit properties from base table. And also it would be great to mix properties from base and/or derived tables in queries.

It is confusing to my team that when a Product Backlog Item is marked as Done and all associated tasks are marked as done that the story remains on the board in its default state.

My assumption is that it would show up collapsed and either move to the bottom of the list or change colors to "gray out".

The tfspreview.com hosted TFS solution is great, but we cannot save changes made via the process editor. So we are stuck with the default states and transitions for workitem types.

We typically don't use hours on our tasks. It would be nice to change the burndown in TFS to use story points on completed/non-completed PBIs instead.

I use Spec Explorer 2010, a model-based testing tool extension to Visual Studio 2010, to generate automated test cases. It has become an important part of our testing strategy. But the current version only works with Visual Studio 2010.

Please develop a Spec Explorer extension for Visual Studio 2012, so that we can continue to use Spec Explorer to generate test cases as our developers move to Visual Studio 2012.

Hability to serve multiple databases with the same deployed instance

Now we get error: TF208015: You are trying to add work items that are not in the selected team project for this Microsoft Excel file. Only the work items from the *** team project will be added to your work item list. If you want to add work items from another team project, open a new Microsoft Excel file from that team project.

Are you kidding me? How is it the TF client can display the results of the query, but the export cannot handle them too? Makes it incredibly cumbersome to manage program-level reporting...

VS offers an option “Go to Definition” when you want to see a function definition; however, if your object is implementing an interface this option takes to that particular interface and you are forced to look for the object that implements this particular method. I propose a new option called “Go to Definition Implementation” which would take you to the object that implements that particular interface.

Enable the ability to easily change the connection string in the designer. A server name may be changed, or the database may be relocated. Currently, every screen would need to be recreated to accomplish this.