PoE Witch, Heist builds

I've been trying to narrow down my league starter for Heist the past couple of days. Somewhere along the line, I decided I want to do a cold DoT Occultist, more specifically a Wintertide Brand Occultist (SC-trade). I have a few reasons (that may or may not be valid, politely let me know). Full reasoning summaries below, but TLDR: I think cold DoT Occultists will survive nerfing and might even be buffed by new Hexes. Wintertide brand also feels safe from nerfing, is non-meta, and there is always Vortex to fall back on. I may or may not be able to take advantage of new Hexes more easily. Al