Make Top Players of Each Base Gain Bounties

Here just an honest plagiarism.

Is there a reason behind this idea? Apart from wanting to single out and punish high achievers?

What would this achieve other than angering all those mlg pros

All those MLG Pros would get more XP too

I like the idea of automatic bounty (generated by the server), but I think it should be randomized so people won't be able to abuse of it.

single out as the best player, yes! That is a good reward. Not just a reason to fight but to be the best.
Punishment is not really what did happened to me when I got bounty. I hot an XP boost, and players are willing to spend some currency to give me that mark.