Hi, looking through theses edits I see no tangible benefits in creating these "template" buildings as you call it. (You also name every changeset exactly the same, but thats another topic)

The buildings you added do not reflect what is on the ground and it would not save you any time as apposed to drawing them proper from the start or just using Rapid editor for rough AI building traces.

If you so desire to contiunue this practice please consider using JOSM and making these edits to a saved .osm file and uploading them once you add all the details.