Feedback on 4 channel current shunt pcb

[WaldPinkler]

I'm new to this. I'd love some feedback. It's a 4 channel shunt with a PAC1934 with barrier terminals. I'm hoping up to 15A.

I don't know what I don't know so I hope a dual layer 1oz board is enough. It's double sided around the pads with arrays of vias going to shunt resistors. 9.5mm pitch on the terminals to get an idea of size.

It got very tight with the PAC chip trying to keep it in that small space.

My concerns:

• Is the via pad set up ok? I have no idea.
• How about running the sense traces down through the middle?
• Is it okay to be so tight with the main chip?

I still have some spit and polish, silk screen, etc. Also to figure out the difference between the Vcc and Vio. I didn't decide on shunt values yet either but selected that wide shunt resistor that I can test different values.