To be perfectly honest I didn't think this plugin would be widely used or adopted, kind of niche thing for a few electrical contractors or guys like myself who like to show a lot of details in their models. I actually got the initial idea from reading through John Brock's book and I really liked how he was placing electrical components into his models. It seemed like too much work to have to place pre-made components into the model at the right depth into the walls and also the height, hence the plugin was born, which automatically sorted out these details for you.
As with my other plugins as I have continued to develop them they have garnered more interest and I've tried to make them more flexible to accommodate more users and standards. I'm currently working to release the British Standard upgrade which will include some typical UK outlets and switches (and boxes). However, a lot more remains to be done to truly make this flexible enough for a worldwide audience.
Keep sending in the feedback, it ultimately helps me fine tune this plugin to better meet the needs of you the user.