I like the idea. It should also be possible to target only dead targets
/target [prev|next|nearest] [alive|dead] [item|npc|player|any]."
Its sometimes hard to loot when the attacking NPC's steal your target

My idea is that NPC's sell the items/ingredients players sold him + a generated number of items with random quality, especially for items that can't be crafted or only looted with Q50.
So you can sell your crafted ingredients and another player can craft high quality items with them. This is already possible without an NPC, but its hard to meet the right people at the right time, especially when the players live in different time zones.
Another pro would be that you can buy the items needed for questing,  e. g. the hides for the golden ring.

i don't see any reason to remove inactive guilds and their houses. There are enough houses left in hydlaa and in the other city's, even better ones.

About the impact of in house content. There should be a guild/group storage. directly acessible in the houses and at the npc's.

I think this game is not too hard, but its sometimes very frustrating wich makes it hard to play.

The most frustration is caused by the Quest-System.
Somewhere in Hydlaa: You got a Quest. Please go to an npc at Eagle Bronze Doors then come back to me
Asking around  The Answer: You have to go through the Forest, passing two maps and at the end of map 3 you'll find it.  Passing bdroad1 ... bdroad2 ... finaly at the npc you realize that you have to go the whole way back  You think about using the DR as shortcut  but than struggle under the weight of your inventory  Back at hydlaa you can't find the npc...  Someone tells you that the npc is "in bed" you have to wait some RL-Hours  You quit the game cause you don't have the RL-Time to wait  Another Day, you can find the NPC, he tells you that you have to go to someone in Ojaveda to finish the quest  but hey there is a pterosaurs  it costs 1500 tria you don't have the money so you run again... 

some days of questing, training and leveling later you met someone with a mount who tells you where you can get such a mount you go to the npc, he gives you the quest (you have the ring of familiar quest already done because the pets are so are so cute  ) again running around.. but then you have to find someone named datal he can be found in the winch    many frustrating and annoying quest later you can give datal the letter  but hey he is busy with a plague and can't help you

great work!
there should be a wiki to centralize all the spoilers

I can try it with c, but it would take some time....

i know i can use "ctrl"+click but i hate to use the keyboard while crafting.

Flying Mushrooms, maybe you can fly if you eat them