I actually disagree. Refulgent isn't really all that clunky, it just gives us another choice between whether we want more damage or whether we need to refresh our Straight Shot timer. One thing I will say though is that BRD DPS will plummet if you make it an oGCD, as Barrage+Empyreal is only about 690 compared to 900 for Refulgent. Generally,

If you refresh Straight Shot through Refulgent, then that's not really a good thing; BRD's current DPS is already way higher than MCH's to an extent, and MCH already needs all the help it can get to stand on its feet in a raid scene. If you remove that decision you're basically giving BRDs an extra 80-160 potency depending on when it procs.