That's was bad example
, but let me try to explain what I mean. At present your plugin do not refresh the screen while client wouldn't say him to do so. I wont just opposite - your plugin refresh screen by default (AFAIU it has all information needed) while client application wouldn't say don't do it.
With this approach applications will run reasonably well without modifications but if you need some more control on screen refresh you can achieve this by the same ScreenProxy but at this time it will not drive updates but just control how to update (which mode to use) or not update at all when we need to avoid extra flushing. Am I miss something and this approach wouldn't work?