VERY hard choosing only 3 for me! I ended up going for...
Backdrops (animated) as this would be a VITAL asset to my camera/motion tracking projects, although there are other methods available this would speed things up no end
OpenSubDiv & Render Region (I did not choose network rendering as this will make its way in sooner or later and I only have two machines, one with a 660Ti and the other with two 660Ti`s) to me, it comes when it comes but I will enjoy the benefit once I have built my other systems up!
LiveDB catalog with drag and drop to Octane Viewport & Lua Script Node support would have also been on my list if it was a top 5 list
Thank you for this poll, it is yet another example of how you actually listen to, hear & act on the views of your customers, a true credit to you Sighman