Profit? They can cheat with tiny amounts so that nobody finds out. It doesn't even have to be an organization-wide plot, a single rogue sysadmin could compromise the currency. Or it could be a hacker with root access. Or maybe some g-men will make them cheat.

I must say I find trading security for popularity to be a very poor choice, but I'm curious to see how this will play out. I wish you luck with your fork.