Summoning/necromancy will be too powerful as a skill by itself... it will be a type of magic akin to ancients and lunar. People might have pets of monsters in the world. If you kill a monster enough, you get the ability to tame it I guess... and have it as a pet like a boss in POH. You could bring it PKing... Hunting? Raccoons and squirrels were released a while ago, but I don't think hunting will be a skill... theres no practical use for it, maybe except newby meat thats better that raw beef. Sailing would be great, but it might be a part of construction. I think no more skills should be added for a while... a lot of what people come up with can be covered by other skills. Swimming, which I think would be a great skill, could be covered by Agility. You see?