Stockholm Pact is the only one of those that might merit inclusion, and even that's a bit of a stretch.
Well, they sure are used more often than "flopers". Even "to do a strange" is not really used anymore. Let's not stick to phrases just because they've been there for a while, the game has evolved and new things have come up. We can leave the old (I'm not advocating removing it), but let's trim down on the nostalgia effect.
I think the important/frequent ones that are definately worth adding:
1) Stockholm pact - Unholy alliance when the baddies join together against the village in a big and it caused controversy. It happens and having a phrase for it might be useful.
2) PJL - Newbs often don't know and there is a difference between a normal JL and a PJL. It's a term used if there are no scanners involved and it's important that new players are able to distinguish between them during a game.
3) Comm Cody - Just because we use it often.
If Carthadeism is there as admitting you are a wolf and getting lynched, then Dadarianism is in a similar vein. Admitting you are a wolf at the slightest pressure. However I'm not too fussed about that one, but the 3 above I believe should be added.