Hmm, I have thought about this for a few days and think I have the right words for how I feel about the topic.
I tried not to sound like I'm "sucking up to Mur", but I agree wit him very strongly on one aspect of Viscosity.
It all boils down to MD is MD. Certain archetypal truths about the world are part of the "physics" of the game, such as "you fight wit hcreatures against other players", and "you have a regen timer to recover stuff".
Viscosity fits into this mold. It is the fabric of the world, for better or worse, and I do not fee lit is "for worse".
Yes, viscosity is high in "distant" lands, and it's one thing to say "just walk there more" but human nature shows us that doesn't tend to happen. This isn't "wrong" in the sense of the game, it's "Inconvenient" in terms of the people in it.
Look what happens when new Quests get implemented in distant clickies. Suddenly, the viscosity there all but vanishes. I've seen it happen more than twice, so know it was not a fluke. It's a reward-based effect getting people "over in that other scene", but the deeper "problem" of Viscosity solved itself through it's own functionality. No need to change it now.
Want proof of this, make a clickie-quest that requires people to move between Awiiya's Way and the Aramory alternately, and often. Give It a WP reward and I can guess that in no time even a new player could grab papers on day one as the gates "fall open" from us active questers. (AP maths may not quite add up to truly allow new-new players, but the MDA gates would still get remarkably "open")
MD is our world too, and malleable for some features and functionalities, but the core "Principles" of fenths, Heat, Viscosity, and such, are in my mind unchanging. They define the world, just like Gravity and electromagnetic forces define ours. we can harness those tools/features in many ways to make things like space ships and computers, and gardens and snowmen, but "Gravity" won't change just because you don't like tripping down a steep hill. We can only make sure staircases are a comfortable and convenient size, or invent the Wheel to help move along without falling.