I think you might not understand what "fad" means. Or you're joking?Meters are part of that metric system fad they tried pushing on us back in the 1970s.
Absolutely. But it probably does help a bit to measure things in something that can exist in the game world. Metres seems anachronistic in a D&D game, so yards is the best choice IMO.All measurement is abstract. They're human creations and as such, we cannot honestly say that one is more legitimate than another.
Well, pace has the disadvantage of not having a formal definition, and also of being further from a metre than a yard is. In common usage it seems to be 80% of a metre, whereas a yard is 91% of a metre.But I think it would be neat to call them "paces" instead. IMO, it's got a more fantasy feel; it's fairly intuitive to understand in realword terms; and it more or less maps 1:1 into yards/metres, anyway.
So, metres then?It should be decided based on ease of use. Yards aren't easy to use as I said, most people don't think in yards on a regular basis.
Is that really a disadvantage? Turn it around: what advantage is there in using yards or meters?Well, pace has the disadvantage of not having a formal definition, and also of being further from a metre than a yard is. In common usage it seems to be 80% of a metre, whereas a yard is 91% of a metre.
Measuring things in hexes and squares assumes grid combat and I hate grid combat.