double move prevention seems to be one of the trickiest things to govern, although almost everyone wants it to work functionally and fairly. "Don't be a dick" (babelfish says: play fair even though the mechanic isn't perfect, or even able to be implemented perfectly 'in polynomial time' probably (*cough* still waiting for that Civ6 quantum state mod)) - seems a good rough basis for greengreens to enjoy a first game.In the only MP experience I've had (gamespy), one of the games had something like a 45 second turn timer which may have got a bit longer as turns went on (I don't even know!). I thought I played pretty okay and it had been going for a couple of hours (intense) but when I launched an offensive on a certain prize city, another player decided to game it up and park half a dozen units next to the city with the sole purpose of grabbing it as soon as he could double move. When I took it back a couple of turns later the ingame chat exploded with bullshit from that player. Those two things to me - angry (non?)diplo tending more toward RL, and double move as a legitimate tactic - are things that I seriously don't think make the Civ4 fun.
I am really really hoping that some players who've had the experience with double move trials and tribulations will be happy to give advice to players on what is and isn't dickish and we can follow what's become the norm with double move rules on RB. Without needing to go all Perry Mason.