Microsoft has many channels (such as connect, MSDN forums, newsgroups, etc.) to gather feedback from users, customers, partners, MVP’s.
This month a new channel called uservoice has been added to the list. Through uservoice new ideas can be proposed and those ideas can be commented/voted by other people. If some ideas have enough votes (they are important), then it is possible that Microsoft will listen to the people and the vNext of Visual Studio and/or Team Foundation Server will contain that feature or change.
This uservoice channel is for Visual Studio, Team Foundation Server and the whole Application Lifecycle Management (ALM). So make sure you give all your ideas. Each user has 10 votes and thus can vote for 10 ideas. Make sure you vote for the ones that are most relevant and important for you, to make sure it will be in the vNext
You can vote here: http://visualstudio.uservoice.com/