as far as follow the around a corner thing wouldn't really be an issue, as rather than following like an npc tthe other player would lkely duplicate your own exact path... but as i think about some lags i have seen looking like they go off cliffs i think i get what you imagined..
Anyway; my more interesting post to this thread is: when dr is expanded it would be great to make people spawn at random locations WITHIN dr. This would lead to a better challenge in knowing the whole terrain to find your way out; less of the following anyone you see, less "lets meet in dr" and whatever other fun times...
The whole people living in dr, seems a lil opposed with the whole discouraging people from dying thing...
It would be nice if dr negated the need to duel ofor pvp combat or such... I would likely never get out, but it would be appropriate i think.