I was wondering if there could be an option for the user to change between two (or more) different locator placing methods. Personally, I find the current one a little bit twitchy and "uncertain". It is extremely easy to accidentally drag-click with the mouse and lose the loop area completely, or alternatively accidentally click on the edge of the loop and drag it, instead of dragging a track.
The Cubase method is very good, and it would be a nice choice to have. The way it works in Cubase is that you press either Ctrl + Alt and click on the timeline to place a left locator and Alt+click to place the right locator. That way you only place the locators when you want to do that - you cannot accidentally move/nudge/remove the loop locators, which happens very easily in Reaper.
I'm sure someone could add a third method that would be even better. It would be nice to have a choice in Preferences, so everyone could use the method they personally prefer