A Slow bot Support?

Ok, so to say I have a tendency to come up with stupid stuff would be a bit of and understatement. I wanted to design a build that was intended to be able to work with anyone and support any build. It is by no means going to make anyone's build significantly stronger, though it does give pretty good cursing. This build was designed to make you have to worry about boss skills less. And I know that 90% of the build is reduced by a good 50% of its effectiveness against bosses. Some of the skills I am using are specific to the person I play with and doing things to support them, so the essence drain with chaotic freeze, to give them the ability to freeze since they do chaos damage. That is just one example. But the idea was to stack as many slows as possible and effectiveness of slows.

So currently I have temp chains, hinder, Chronomancer slow and freeze, the companion is a temp bubble melee beast which I supported with maim. I think I got everything there that I currently have going, but I could be wrong.

Here is the POB: https://pobb.in/MXvSlNj68flw

If anyone has any suggestions of things I have missed or some changes to the tree I am all ears, some of the pathing is a bit atrocious, but it seems like that was the fewest number of nodes required to get to some of the niche nodes I wanted to get to. Oh and this has also been a pretty budget build, so not too much currency has been thrown at it, maybe like 3 div?

Also, just throwing this out there, I do wish you could trade companions, finding the one I want/need has been a nightmare and this is just the best I could find for now.

Still sane exile?