The skill is fine as it is. To reap the benefits of it, you need to use it in a combo. If you just went around spamming RoH, you'd do significantly less DPS and in the long run, enmity generation because the raw attack only does 100 potency.

It also isn't our highest damage ability. The potency in combo is 260. Our highest damage ability, Spirits Within, is 300 potency; you get it at level 45.

When you say utility, I assume you mean the -10% STR debuff from the RoH combo. It doesn't do as much as you might think it does. Definitely not a deal breaker.

Adding a cast mechanic to the skill wouldn't do anything but render it useless. In an 8 man, you need to be constantly generating threat to keep up with the large amounts of damage and healing going on. Having to stop and cast, giving up a lot of our off GCD abilties that we have (provoke, spirits within, circle of scorn) would put us behind greatly.

TL;DR: No.