I dunno, seems like barsooma was making a reasonable point to me, one that's better seen in context. I mean, we're talking possible here, so those 5% of cases matter.
To which I might add, how the heck do you know why people resign? You totally just pulled your statistic out of the air.
Yep, of course I pulled it out of the air.
You think I tried to make it seem like it was based on studies?
It was based on experience of course. I play mostly two player these days, but I'd say that for every resignation when somebody "has to go", there are at least 30 that are because they are losing (or think they are). If we factor in multi player games, there might be more "has to go" resignations, if we assume that there are some people who don't resign in multi player but would in two player. I have a feeling there aren't too many of those; people who resign, generally just do so no matter what. But I can't know that for sure.
Anyway, 5% (1 out of 20) doesn't seem unreasonable. So the down side to removing the 'resign' button in multi player would be that in those 5% of cases, people might close the tab, leaving the other player's hanging. Actually some of those people might exit instead, which wouldn't be a problem. So only when they close the tab instead of exiting.
The up side would be that in those other 95% av cases, some of those people might be discouraged from resigning because there's no button. (The FAQ should also state that you shouldn't resign in multi player.) It's pretty hard to say how many resignations that would prevent though. There's also the problem that some people might close the tab instead of not resigning, or exiting.
However, there's also the result of these two undesirable outcomes to consider. Closing the tab as opposed to resigning is inconvenient for the other players, nothing more. Resigning (or closing the tab/exiting) in a multi player game ruins the game, technically. I think that ranks far higher.