Someone did the math and over a 10-minute fight the randomness of the Shot procs don't end up affecting overall DPS very much. I will agree that it's annoying when you end up doing six Slug Shots in a row, but yeah. MCHs are also parsing about 1050 on dummies now, which isn't that much less than I do as DRG over five minutes.

tl;dr - The problem is exaggerated, but I still think some tweaking is in order. Nothing major, just some finetuning of cooldowns and potencies. Yesterdays's patch also ruined the Gauss/Rapid Fire stancedance, which is a shame.