Advantage of using Control Rig instead of ARP Quick Rig ?

[ArkrepNeatboy]

I know it is not implemented yet but I was wondering what where the upside of it ?

[jack-yao91]

The problem with ARP Quick rig, is it constrains the RBF corrective bones, as well as the swing and twists. ARP does its own setup for those, which do not match exactly what the MetaHuman bones are doing in Unreal Engine.

What the Character Control Rig addon does, is give you a "control rig" (i.e. rigify, and in the future ARP, etc) for you to pose and animate with, while piping the dependency graph updates to RigLogic so it can evaluate against what is configured in the DNA. For ARP to work correctly, the MetaHuman rig would actually need to be modified, manually fitted, and then there is the Animation Import/export (which ARP does haves some utils for), and evals passed to RigLogic.

Here is more info on the body RBFs:
https://youtu.be/i5Dwwy98d2Y?si=qe-gdnWw7IzdbcIt

What I would recommend:

1. If you are using Blender to make final pixels and your body rigs look "ok" to you and you are not getting bad deformations in the poses you are doing for your particular animations, and you already bought ARP and ARP quick rig, then ARP quick rig will probably do the job for you.
2. If you want to animate in Blender and bring back into Unreal for finals pixels, or if your body deformations are poor in certain poses of your animations and you need RBFs to increase the fidelity of your deformations, then the Character Control Rig will solve these problems for you, by giving you a 1-to-1 match with how the MetaHuman control rig evaluate bones in Unreal Engine.

How much value you will get out of the addon really depends on your workflow, your character, what shots you are making, and how important accuracy is.