If the emulation aides in FPGA or small device coding to make modern interface bindings to older devices and so drops the entry cost to get an older SCSI or firewire drive working, I'd be delighted.

If this is emulation of the command set aimed at "driving" a software emulated tape drive, It's for another purpose. It won't help me recover old media.

(cheapskate: there are competent, expensive companies which specialise in this kind of data recovery. The problem is cost/benefit, not actual capability at any price)