I would like to request the feature
Microsoft's addition of asp:CreateUserWizard is most welcome it covers the typical UX of every site however its not pretty.
A quick win for you is to have in one of your blogs a post showing reskining it with the depth of your controls.
An initial colouration can be used with telerik:RadFormDecorator this is clunky as below.
<telerik:RadFormDecorator ID="RadFormDecorator1" Runat="server" DecoratedControls="All" DecorationZoneID="ContentPlaceHolder1_CreateUserWizard1" Skin="Sunset" />
What would be nice is a <telerik:CreateUserWizard/> with the option of selection the MS standard backend or other third party IAM providers such as Google/Azure/Telerik/KeyCloak-OAuth
Just that Telerik would come out the box with Internationalization sorted.