GLA <25 and keeping enmity

[Bardo]

I'm curious to hit level 26 now to see just how much of a different RoH makes.

It's pretty huge.
With just Fastblade+Savage Blade you're doing about 375 potency in enmity per global cooldown on a single target.
Add RoH and it jumps to about 683 potency in enmity per global.

So it gets pretty close to doubling your single target enmity generation.