I can only answer for DW-fury now but here goes. If weaponskill also adds to your hit, it still wont mean that you should drop +hit gear in favor of other gear just because you are over the yellow-cap as you fury you'll need as much +hit as possible. Dropping +hit may make sense once you get past 15-16% hit but by then you would already be in BWL/AQ gear and hopefully be using race-appropriate weapons and maybe even edgemasters so the point would be moot.
TLDR: An orc at entry-raiding shouldnt drop hit if he's at hitcap even with edgemasters and axes. Hit at that point is still too valuable for rage purposes.
in TBC and i think that the same here.
you only need soft cap hit (yellow cap), when you have soft cap hit => crit > hit.
Some reason is:
Crit is +1 % damage for yellow and white hit (since crit is 200% of normal hit, 220% on yellow with impale); then it proc flurry (this talent make you do more hit by improve the rate speed of hit), add the fact that we had heroic strike (when 50+ rage) to reduce the number of miss, GlancingBlow from white by turning a white hit into yellow.
While hit above soft cap will improve only by 1 % white damage (not yellow).
Then don't leave all hit, but if you have the soft cap and the choice between the same piece with 1 % crit and 1 % hit, choose the one with the crit.
For example AS 2.8:
New Attack_speed = 2.8 / ( (30 / 100) + 1 ) = 2.154 - 2.8 => 0.64s x3 hit 1.93s so 1.93s is 0.69% of 2.8s.
So each time you crit you win flurry that make you win 0.69 % hit.
Add the miss chance on the new hit won 0.19 (19%) => 0.69 / ((19/100)+1) = 0.57%
Admit you win 0.57% of a hit on each flurry.
So when you add 2% crit you add the same effect than 1 % hit (don't mean you won't miss but will add 1 white hit) + the normal effect of crit.
Carefull this choice mean to have miss, but mean to do more total hit too.
At high gear (when crit cap reach) hit can become better than extra crit cause hit will make you win some glancing hit or crit)