https://www.ema-eda.com/products/ema/cadsyncI do experience this "frustration" they speak of. Things like my precious RF PCBs being difficult to send properly to mechanical because there are 5000 ground vias but Allegro's export isn't flexible enough to ignore ground vias, etc.
Typically RF boards are not very dense electrically, but have many mechanical features that need to be worked out like cavities, mouse holes, hot vias, cutouts for active devices, mounting holes, heat spreaders, critical heights for some parts, holes need to be lined up in machined covers for LEDs, feedthroughs need to be located critically, wiring and waveguides aren't really PCB parts so they sometimes float around ambiguously and can be forgotten... etc...
Sooooooo, this tool looks interesting but I would like some critical feedback from actual users.