If there were open source Dante that actually worked it would be very cool. Don’t know how much usage it would get since the hardware will always lock it in. But for small studios and research it might be cool. Interesting project nevertheless.
ETH-68 doesn't have nearly as broad of scope as AES67. It is a much simpler system, so easier to realize for a 1-person team working on weekends.
Just a few other comments: 1. AES67 usually means Dante hardware which is notoriously expensive. 2. Dante devices running in AES67 mode often (always?) have their capabilities reduced. At least in some cases you are limited to 48 kHz, and I believe you are also limited on latency compensation settings. Someone with more experience could chime in.