I'm missing ability to easily override the jbutton class. Now i have to make layout overrides for all views in order to change to BS4 styling completely. Would be handy if there would be a toggle for this. In the likes of how RSForms!Pro does it where you can select what framework to use. (HTML5, BS3, BS4, UIKIT) for instance.
Or a setting to override the standard button class. Or maybe create layouts for your buttons instead of using only templates in your views. That would make it much easier to override.