I've built this out in Wire for a friend in the past. It's not too hard, do you think you could build something similar out yourself?

Clip amount is the same regardless if you use more column or layers. For each layer, you now have to render out another texture running at your composition set resolution. column don't
If you aren't having performance issues, that's great. Just giving you a friendly heads up is all

more layers = more system resources. more columns doesn't

Look into Voicemeter Potato, you can send it out an aux so you can hear it and route it internally.

Correct.

Yup

That's the point of Wire.... It's not apart of another software. You use Wire to create sources and FX for Arena/Avenue.

You need to get your mapping file then export as svg then import into AE and animate start and end point using saber.

Wire should be able to do this in the future when there is more GPU to CPU communication.

https://www.amazon.com/BlueAVS-Capture- ... 08QF6YWWD/
These are a cheap way to get a camera brought in.