We have been working for a while on COVID Moonshot and having the structures have been indispensable resource:
https://fragalysis.diamond.ac.uk/viewer/react/preview/target/Mpro/
One feature that was very useful is the direct links to molecules, eg.:
https://fragalysis.diamond.ac.uk/viewer/react/preview/direct/target/Mpro/mols/x11812/L/P/C
These are no longer working with the updated production version. The link just does not open.