Adding steal/snatcher skill is an interesting idea.
I was thinking something similar for the questable rucksack. The GM who accepted the suggestion before had made some, I believe, but she is no longer here... We could probably see if one of the spriters would be willing to make some.
The idea of having a player support guild that's affiliated with the staff has already been rejected more than once. I don't think that this is really an option, though I'm not against it myself. As I said in another post, you are more than welcome to help players on your own time. When looking at GM applications, I would imagine that the staff already considers how helpful the applicant is to other players, along with other things.
About the Forsaken Dungeon Quest NPC: I think most people who have access to the NPC would know why they would perform the quest, like nines said. I certainly don't see the harm in adding in the dialogue you suggested, though. I think making sure new players know that the pass exists is a good idea.
Something that I had thought of is adding an NPC to welcome players to fRO, explain unique things about the server, tell players to make a ticket if they have an issue or need support, etc. We could include something about the Forsaken Dungeon pass in there as well. What do you guys think of this idea/do you have any suggestions for what else the NPC could say?
This is an interesting idea as well. We could certainly discuss this more. Though it is abusable as nines said. To do this, we would have to figure a way around that. You can only vote on the actual voting sites (eg. Game Sites Top 200) about once a day from an IP. As far as I'm aware though, you can just make multiple accounts and click the vote buttons without actually voting, but still receive the vote points (unfortunately). While vote points are account-bound, if you could convert them to donation coupons then that would mean you could pass them to different accounts.
Though they could do this, zeny does not have much value on this server. It can buy things from NPCs and supplies for some classes, but that's about it... I don't think it would matter that much.