1. in order to have more old members comeback to emps, we need to offer more skills that they can master, otherwise they get bored. Also bring more dungeons, maybe a dungeon that has pk in it, might bring back pk to emps. Now for bosses i love the Nex idea, but is there anyway we could make it more as a group boss. Back when emps-scape ran i loved group bossing, it not only made it fun but also very competitive.
2. In addition to skills make more things you can do for old skills, such as for fishing and cooking bring in rocktails. Not only will it be a nice idea, but could help the eco by having another food that players can make money off of, and create more money for pkers.
3. I like the idea with emps-wars where you had a boss you can attack, personally i was not a fan of the flag capture. Everybody loved where you could attack the boss, but then you have the idea where the games go by to fast, because of the high leveled players, so i suggest a balance on the boss that makes the game last a little longer, and makes it a bit more difficult for high level players.