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Should vibrato be used on Die Meistersinger?

Very slight vibrato.

I have never played this in performance, so I can't answer how I play it. However, I can say I greatly prefer hearing it without any vibrato, so you can guess how I would play it.

Wagner here uses the brass to underscore the pompousness of the events in the opera. To use vibrato in these cases would be like a trumpeter using vibrato in a fanfare.

An unsupported opinion by
Allen

If I remember correctly, J to the end is unison with the basses and the bassoons. Of course, the basses will play it with vibrato, and the bassoons most likely won't. Sometime the basses have unified vibrato speed and can hear the pulse, and sometimes they don't. If they are sitting in a audition committee, which would they prefer to hear? I heard the horns are using vibrato more commonly these days, and traditionally they are played without vibratos. Questions, questions, questions...

It's even better when you take it up an octave . . .

Don't forget: change the trill to a shake (as wide as you can) like jazz band trumpets do,
and then take the final G up an octave -- glissing up to it.
(also like lead trumpets do...)