Thank you sending these viable suggestions. I have logged a Feature Request on your behalf regarding the ReadOnly() property on the FeedBack Portal where you could start tracking the progress on the item.
The current implementation of the TextBox, ComboBox, DropDownList and MultiSelect do not provide a Readonly() wrapper method. Currently you can set them as enabled/disabled via the Enable(bool) wrapper. Alternatively you can make the particular widget readonly by specifying this in HtmlAttributes() property.
I have also logged a Feature Request concerning the unification of the PlaceHolder() property among widgets. You can follow the track the progress on it here. The PlaceHolder() property might be available as OptionLabel() in other widgets, for example the DropDownList.
For further Feature requests you can visit directly the Telerik UI for ASP.NET MVC Feedback Portal available on the link below:
Finally, as a token of gratitude for providing these suggestions I have updated your Telerik Points accordingly.
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