If you don't want to introduce the new view type and you just want to modify a few things in the view instead, you can use js_class on the view. For example, if we want a view similar to the kanban one that we created, then we can extend it as follows:

var CustomRenderer = KanbanRenderer.extend({
    ...
});

var CustomRendererModel = KanbanModel.extend({
    ...
});

var CustomRendererController = KanbanController.extend({
    ...
});

var CustomDashboardView = KanbanView.extend({
    config: _.extend({}, KanbanView.prototype.config, {
        Model: CustomDashboardModel,
        Renderer: CustomDashboardRenderer,
        Controller: CustomDashboardController,
    }),
});

var viewRegistry = require('web.view_registry');
viewRegistry.add('my_custom_view', CustomDashboardView);

We can then use the kanban view with js_class (note that the server still thinks of this as a kanban view):

...
<field name="arch" type="xml">
    <kanban js_class="my_custom_view">
        ...
    </kanban>
</field>
...