When I joined IIS I was told to ask lots of dumb questions, so here's another
The title says it.. There must be a point where a quality eyepiece is simply overkill. I'm thinking an Ethos on a department store scope for e.g..
Just say there was this guy, right, who had a GSO 10" dob...

Would he be crazy to invest in a Nagler, for example? Assume well collimated optics in good condition of course