200 is nice to get. I usually get less (but sometimes get more). It wouldn't bother me any if this was imposed, but I am not one to want to mess with the way things are. That said, if it becomes part of the culture I am quite alright with it... and I tend to vote that way already (but at 300).
My own personal opinion is to let the coins fall where the stake decides to put it... I also think your idea is not a bad one and I encourage you to run with it and see where it goes.
RE: Maximum reward - A draft of a proposal