I didn't cover SK because it is a fairly common system and I'd rather expose players to loot systems that they may not have heard of before. RFL, Shroud, and Ni Karma are systems that I, at least, have very seldom heard talked about, let alone used, and I think that all three of them are perfectly valid systems that are worth looking into for certain guilds -- when I was running a guild, we went with loot council since we were a reform from a guild that previously used it, however, given a choice, I would gladly use NKS as my loot method of choice.

I mentioned Dual Token because, although it's a common-ish system for PuGs (though GDKP is taking hold now a days) few people realize that you can solidify the system to be used in an actual guild setting and have it work.

Standard DKP, open rolls, or loot council systems have been around for ages; players know of them and how they operate. Although I find the topic of discussing their pros ad cons fascinating, it is something that's been talked about many times before. I thought it would be nice to introduce something new, something a bit fresh to the table, and perhaps players will try them out and find a system that works better for them than what they use now.