Guess what? You can not use the patrol feature just as easily in a multiplayer game as you can not use it in a single player game. If you don't like giving your enemies a "free blitz" against your patrol ship, then don't use it. Single player or multiplayer makes no difference!
Is there some reason you simply can not resist using patrol? Is it a genetic trait or something that makes you press the patrol button? You really need a patch to stop you from pressing patrol?
I know what you want: you want a patrol feature with absolutely no downside. You want all the upside of the patrol function (protecting all adjacent tiles + the coastal defense bonus), and you don't want to have even one extremely minor exploit used against you that is only applicable in very rare and contrived circumstances.
It's a very powerful feature. It should have just a little downside. IMO, this exploit is so unimportant, it's not nearly downside enough.
As I'm lazy today, i'll quote myself:
What are you saying is "Well , you have a function in game that allows 1 units to shadow cover multiple tiles. But that has to come with a slight price, that is to be vulnerable to lose 10 ships in 1 turn to a non-blitz unit and/or to be able to be milked from XP with high withdraw subs" . Sorry but that is not my idea of a fair trade or of a interesting choice" ( like JujuLautre said )... it is more my idea of "WTF, I'll never touch that button again in my life"
And if you want a decent payoff, why not limit the number of possible interceptions to a function of the movement points, like , let's say, half of them? It would make more sense even in RL terms ( they would have to move to intercept and to come back to the initial position, so assuming that all the movement points are used in combat is a stupid proposition )
And about multiplayer: the fact that I use patrol or not will not make my foes to use or not patrol. So , or we make a earlier combination about all of us not using a game delivered function ( that is sometimes dificult, regardless of any morality issues about this being a bug/exploit or not ) or some of the people, because of their choice of using patrol ( or by stuborness or because of the simple fact that they don't know about this particular quirk ) will be handicapped compared with the others. So, please, do not assume that it is the same thing in multiplayer or in SP ( where you are the only moral/imoral being in game) , because it is not
P.S. I've been rereading the thread and I noticed that it is the second time that you imply that, just because I don't agree with you, I just want to milk the AI. I responded you in lenght in the first time, so I'll only remember that my position was always that the AI should also use patrol function. If the AI used patrol you would probaly be the first to call for a fix ( it is what I can assume from this thread ), so why the double standart( it is double standart in both ways: or you are defending that the AI should not use a function that humans can use, or you are defending that a feature that can be used for heavy exploting of the AI ( assuming that it uses patrol ) should be kept in game) ?