Take this image for example:
http://webdiplomacy.net/map.php?
gameID=182173&turn=3&mapType=large look at Norway/Sweden. How can two units affectively defend against 3? This is nonsensical, effectively army Sweden is in two places at the same time! Defending sweeden, while attacking and preventing _supported_ (yeah I know it is supposedly supported too still) attack.
So that is one thing. Another thing is shared with other games, like Civilization. Ala light speed convoy. Example from civ game first, as units move one by one, you can load say tank, in ship, move ship, to another ship, then load tank in that ship, move that new ship and repeat with however many ships you have. Problem is this is nonsense since as a nation all your moves happen supposedly at the same time, and thus tank being transported crazy distances this way implies it basically being in all transports at once, some quantum nonsense eh? Otherwise why can one ship just move same crazy distance? Effectively I see same applying to diplomacy, if fleet can only move to the neighboring territory there is no sensible way how it then could unload unit to other fleet and have it transported crazy distance possibly through even more fleets, while at the same tame not having such movement abilities.
An yeah I know it's just a game, still this gets on my nerves....
Discuss! :)