actually now its usable

Kits/Views/DefinitionIdEditor.xaml

@@ -0,0 +1,18 @@
+<UserControl x:Class="Kits.Views.DefinitionIdEditor"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:kits="clr-namespace:Kits"
+             mc:Ignorable="d"
+             d:DesignHeight="300" d:DesignWidth="300">
+    
+    <UserControl.DataContext>
+        <kits:DefinitionId/>
+    </UserControl.DataContext>
+    <StackPanel Orientation="Horizontal">
+        <TextBox Text="{Binding TypeId}" Margin="0,0,3,0" />
+        <TextBlock Text="/" Margin="0,0,3,0" />
+        <TextBox Text="{Binding SubtypeId}" Margin="0,0,3,0" />
+    </StackPanel>
+</UserControl>

Kits/Views/DefinitionIdEditor.xaml.cs

@@ -0,0 +1,12 @@
+using System.Windows.Controls;
+
+namespace Kits.Views;
+
+public partial class DefinitionIdEditor : UserControl
+{
+    public DefinitionIdEditor()
+    {
+        InitializeComponent();
+    }
+}
+

Kits/Views/EditButton.cs

@@ -0,0 +1,20 @@
+using System.Windows;
+using System.Windows.Controls;
+namespace Kits.Views;
+
+public partial class EditButton : UserControl
+{
+    public EditButton()
+    {
+        InitializeComponent();
+    }
+    private void ButtonBase_OnClick(object sender, RoutedEventArgs e)
+    {
+        new ProperCollectionEditor
+        {
+            DataContext = DataContext,
+            WindowStartupLocation = WindowStartupLocation.CenterOwner,
+            Owner = Window.GetWindow(this)
+        }.ShowDialog();
+    }
+}

Kits/Views/EditButton.xaml

@@ -0,0 +1,9 @@
+<UserControl x:Class="Kits.Views.EditButton"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             mc:Ignorable="d"
+             d:DesignHeight="300" d:DesignWidth="300">
+    <Button Content="Edit" Click="ButtonBase_OnClick" />
+</UserControl>

Kits/Views/ProperCollectionEditor.cs

@@ -0,0 +1,21 @@
+using System.Collections;
+using System.Windows;
+namespace Kits.Views;
+
+public partial class ProperCollectionEditor : Window
+{
+    public ProperCollectionEditor()
+    {
+        InitializeComponent();
+    }
+
+    private void ButtonAdd_OnClick(object sender, RoutedEventArgs e)
+    {
+        ((IList)DataContext).Add(Activator.CreateInstance(DataContext.GetType().GenericTypeArguments[0]));
+    }
+    private void ButtonDelete_OnClick(object sender, RoutedEventArgs e)
+    {
+        if (ElementsGrid.SelectedItem is { } item)
+            ((IList)DataContext).Remove(item);
+    }
+}

Kits/Views/ProperCollectionEditor.xaml

@@ -0,0 +1,35 @@
+<Window x:Class="Kits.Views.ProperCollectionEditor"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:views="clr-namespace:Torch.Views;assembly=Torch"
+        mc:Ignorable="d"
+        Title="Proper Collection Editor" Height="450" Width="800">
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="1*" />
+            <ColumnDefinition Width="2*" />
+        </Grid.ColumnDefinitions>
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="10*" />
+                <RowDefinition Height="1*" />
+            </Grid.RowDefinitions>
+            <DataGrid Margin="3" Name="ElementsGrid" AutoGenerateColumns="False" ItemsSource="{Binding }" IsReadOnly="True">
+                <DataGrid.Columns>
+                    <DataGridTextColumn Binding="{Binding Name}" Width="*" />
+                </DataGrid.Columns>
+            </DataGrid>
+            <Grid Grid.Row="1">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition />
+                    <ColumnDefinition />
+                </Grid.ColumnDefinitions>
+                <Button Margin="5" Content="Add" Click="ButtonAdd_OnClick" />
+                <Button Grid.Column="1" Margin="5" Content="Delete" Click="ButtonDelete_OnClick" />
+            </Grid>
+        </Grid>
+        <views:PropertyGrid Grid.Column="1" DataContext="{Binding ElementName=ElementsGrid, Path=SelectedItem, Mode=OneWay}" Margin="3" />
+    </Grid>
+</Window>