If I didn't have ignore defense, so I could freely swap different bows, I'd prefere azgar's mark in TA for sure, just more hard hitting and self proccing arrows, that thing is a beast, if you stack 15% arrow helm, and that 3x proc quiver. Proc arrows seems to increase damage almost exponentially, if you managed to add that 5-10% on top of already high % it makes really big difference in what you see on screen.
I'd keep painless only for areas with annoying physical immunes, everywhere else I'd stick to arrow procs.
Taha bow was also mentioned, it is alright choice.
Sha'ad I didn't test much, but with crucify having now up to 16 targets, that must work really well, provided you kill and move fast, so you can get that proc chain going, as any build heavily focused on kill procs.
As for helms, you can't beat that xis rw with 15% arrow, 15% DR and huge defense. Just look at it:
I think that is bis for any weapon based druid, except treewarden (currently) that hits so many times via op no-nd thornstrike, that you are better off gdabbing helm with elemental proc, since you don't need more physical damage.
As for wots, better doublecheck the damage, because oskills = soft points, so that wots you get works like 1pt wots on sin, with +skills from items, it has no base level synergy. Damage is low, similar to items with for example snake stance oskills. Hive you can get elsewhere (klaatu, elemental band), and it is fairly slow to start going, so depends on your build. It sort of already locks your build into fairly slow, if you realy on running around and waiting till hive clouds cover everything you need to cover. It may work if hive targets go towards your char, like on merc barb build, where you use that to kill neons, so they all walk into your hive, doesn't slow you down. But if you had to for example teleport around every pack of necrobot to hit them with hive, I'd say it would be pretty slow and annoying to do.