Sadly the 3.05 buff was not to B4 refreshing Enochian, but the 60s CD Enochian ability itself refreshing Enochian, which is where we are now.

But yes, having B4 simply refresh Enochian back to the full 30s would solve the biggest problem w/ current gameplay wherein the rotation tries to delay refreshing Enochian for as long as possible (to make the most use of the allotted duration), but if you are then "mechanic-blocked" from casting B4 in time, you are screwed for a good 30s.

Now if B4 simply refreshed Enochian to the original 30s, then the rotation could be adjusted such that you plan to refresh when its around 10s. So 20s of Fire/Thunder time, and then a 10s window to refresh, every time. With that in place the only way to lose Enochian is to really mess up your rotation, get overly greedy with the Fire/Thunder phase, or lose your target... But if you are doing it right to begin with, you'll have the Enochian ability available for when your target reappears.