I would also like to point out that if you are not playing a hunter to maximum capacity you will not notice this since you most likely have tons of down time that could be filled with steadys and thus have a slower focus regen time. So before you post that it is too slow think if you fit into this category.
When we had mana we did not have to watch our resource bar an entire fight.
A DPS rotation should be difficult by having to make decisions and managing procs. Watching your focus bar to make sure you dont cap since it fills in about 5 seconds is not difficult it just requires your eyes to be on it the whole time. This is not fun.
Looking for others peoples input on this and maybe a blue will read it.