I’d take a good, old fashioned TT grounding post on the back panel. I hate having to hijack a chassis screw (the chassis screws are secured with nuts inside the box I can’t get to to tighten). Talk about a minor beef with one of the best components of any type I’ve ever owned!
And I guess, the headphone amp was (in the world of dedicated hp amps) ‘fine’ but not amazing – not good enough if you’re a big headphone person. I say make it a statement-level hp amp, or leave it out. The main, glaring critique was the annoying buzz that was audible (through Focal Utopias and others) whenever the preamp volume display was not turned off. This pretty much ruined the decent hp amp for me.