This kind of stuff requires access to the complete architectural parameters of the device, so adding support for even a single device family is a huge reverse-e

This kind of stuff requires access to the complete architectural parameters of the device, so adding support for even a single device family is a huge reverse-engineering^W documentation effort. See f4pga.readthedocs.io which consolidates pretty much everyone's efforts into a distribution, but supports only 4 device families: iCE40 and ECP5 from Lattice, some 7-series devices from Xilinx and EOS-S3 from QuickLogic. For internal testing, VPR has "Stratix IV-like" and most recently "Stratix 10-like" architecture files but these don't try to "document" the whole thing, they just want a close enough approximation to a modern device to evaluate the tool better.