Bonus: LOC by project at c5e84ff0:

233524 BizHawk.Emulation.Cores
109677 BizHawk.Client.EmuHawk
37142 BizHawk.Client.Common
8882 BizHawk.Emulation.DiscSystem
7241 BizHawk.Emulation.Common
5641 BizHawk.Common
3174 BizHawk.Bizware.BizwareGL
2646 BizHawk.Bizware.DirectX
2216 BizHawk.Bizware.OpenTK3
2058 BizHawk.BizInvoke
1221 BizHawk.Tests
991 BizHawk.WinForms.Controls
896 BizHawk.Client.DiscoHawk
207 BizHawk.Bizware.Test
11 BizHawk.Version

generated with cd src && for f in BizHawk.*; do printf "%s %s\n" "$(find $f -name '*.cs' -print0 | xargs -0 cat | wc -l)" "$f"; done | sort -hr

Rider does this now, and it also has some sort of metric for inter-project references. Here's what it looks like with that and transient deps both enabled (at b9c91443):

I'm not sure how to read it, but here's the data file it generates: BizHawk.argr