I'm not graphics dude myself. But I do not think it is hard to do, and it would improve the visuals of large ships greatly. I do not know about others, but the reason I avoid dual beam banks, is because they shoot from some horrible hard points.
On the Regent (and the Odyssey, if I remember correctly), the emitters for the dual beam banks are very close together on the front of the saucer... the empty space between the two beams when fired is only about one beam-width. When using Overload, the beams even overlap.
This would be amazing. The Venture class and the Venture X both suffer the same issue. I know, same basic model. The V-X though fires from the edges of the saucer too though, and that has canon ports above the bridge, like the G-X, and the G-X fires them from there just fine.