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The near full Moon can be uncomfortable for me especially in wide angle eyepieces. I have to keep my gaze fixed very close to the centre of the FOV, otherwise I get blackout with my contracted pupil. When the lunar surface fills the FOV I want to be able to let my gaze wander around the entire field and look at all there is to see as I please. I definitely need a filter like the ND, or high magnification, to be able to do that comfortably (esp. when binoviewing).
Maybe a different design eyepiece would help. Here I'm referring to my experiences with the 19mm Panoptic in a 2x barlow in the 8" Dob, so the Moon just fills the 68 degree FOV.
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