Rogues rework

[steel bison]

I think the rogue class has a fundamental design problem right now: they swing between being overpowered or completely useless. The root cause seems to be crit-based scaling. If instead they scaled with flat armor penetration, they’d play closer to true assassins. They’d still be able to delete carries when ahead, but they wouldn’t melt tanks, which feels much more in line with their intended role.