without having to use a DataGridTemplateColumn every time. DataGridTextColumn is virtually useless because it cannot be styled

MultiBinding is a must-have feature. It is used extensively by virtually ALL moderate-to-large size WPF application. I wonder that not only it has not been added yet, there's no mention of the feature even in the upcoming roadmap.

Please add support for MultiBinding if you want serious WPF developers to consider this tool.

mahapps.metro a UI toolkit for WPF
http://mahapps.com/

use dataTemplates, link by dataType

Supporting manifest generation, service worker development, and access to the extended api set to allow development of PWA apps

I'd like to use:
- Microsoft.Azure.Mobile.Server
- Microsoft.Azure.Mobile.Client
These are libraries that help connect and implement Azure App Services, which are crucial to making Azure Mobile Applications.

Please provide CRUD (insert,change,delete) support for Microsoft Azure SQL

The silverlight SDK contained many of the features missing from silverlight: A menu control, a validation summary control,etc. Our silverlight projects made heavy use of them.

A way to preserve changes made to generated javascript files. You might want to look at some of the older code generation systems to see how this can be done, but typically with markup code to define sections of the file that should not be overwritten. If users want to move the code to pure javascript, this enables the intermediate step of having some code ported while other code is not.

I tried it today an there was almost nothing I could do! even BeginAnimation is not supported!!! I tried to make a Border Brush with Gradient but nothing happend! do something about it please. I think you should mostly focus on xaml!

Many of the request here relates to this, but in general I feel there's currently insufficient .NET Types and Framework Classes support. Ideally should be 90%+ coverage

TransformGroup is a missing type, which I use everywhere in my silverlight projects, adding that would make this usable.

For many elements that are supported by CSHTML5, the support is not complete; one or more members are highlight as "not found on {type}" in the XAML editor. For example [Binding] does not support [StringFormat] property. Similarly [LinearGradientBrush] does not support [SpreadMethod]. Please ensure that you support all of the properties for the elements that you claim to be supported.

Enable development and compilation on Apple Macs

Currently the routed events don't behave like routed events in WPF
No Handled property for example

WriteableBitmapEx is a popular set of speed boosting apis.

in WPF is is unmanaged... in Silverlight is is managed code