1. I like to use my custom toolbars. 2. Some controls have dependencies from the installed extension. e.g. Show Mobile Screen button can be visible only if the Mobile Module is installed on the current instance of TestComplete. 3. From time to time I need to uninstall modules on one of the instances and install it on other. And I am feeling a little pain, because after I have reinstalled mobile module back, my previous custom controls are not restored automatically and I need to restore them manually each time.