The frost hands are great for thermal void, basically by default you have to guaranteed extra ice lances resulting in a MINIMUM of 20% uptime of icy veins
mags bracers? thermal void gets essentially near constant 18% damage boosts with all that ice lance spam and extended icy veins.
zannesus journey is kind of a wtf out of left field AoE boost that seems hard to use consistently, but again, not an ideal boost to glacial spike builds.
Blizzard should consider adding secondary boosts to glacial spike or icicles to be more universal so that glacial spike builds can benefit, if they don't want to boost thermal void builds they could just add something that boosts glacial spike builds where it is an either or issue regarding how you benefit.
AS we all know, I am on record for wanting glacial spike to turn into Gray Fullbusters Zero destruction bow ability, where a massive shard of black ice pierces the enemy, impaling them and causing lingering damage (shadowfrost dot please?)
https://www.youtube.com/watch?v=xqhe5Z20YwQ#t=2m30s