Split/combine threshold at 200,000 coins at 10 days
wtf is this? are you restricting splitting coins? this restricts valid use cases of a currency...
By the way you describe your attack, the result would cause financial detriment to you since you would be paying tens of thousands in fees but Stakers would also get all those Coins plus 10% more!.
why pay a lot in fees? the splitting is done in only one transaction. PPC destroys fees, they don't go to the stakers, but others do distribute the fees...