From the 2.5.0-Beta-1 release notes:

Starting with this release, PrusaSlicer is able to import STEP files, which is a format widely used for 3D modelling data exchange. Note that the model is tessellated on import and the slicing algorithms operate on the resulting triangle mesh, i.e., the model is not sliced analytically.

This is exciting because there is a minimization in file exchanges that need to happen going from design to manufacture; STEP files are a fantastic CAD-agnostic file import/export medium using a standard maintained by NIST.

The downside, as highlighted in that quote, is that the fidelity lost in going from CAD-native files to STL files are maintained. STL files are topologically different from all CAD native filetypes, which is why you can see some faceting in 3D prints, and why until SOLIDWORKS 2022 that performance would decrease dramatically when trying to work with mesh files.

With the Hybrid Mesh Modeling toolset in 2022 allowing Makers to make edits to STL files and PrusaSlicer starting to support STEP files, I'm really looking forward to making it easier to remix files on Printables, Thingiverse, and other sites like GrabCAD!