Tbh they should just cut out the disease and ban it all together, does a multiboxer bring a single positive thing the server? one minor thing? if people want to play alone on a MASSIVE MULTIPLAYER ONLINE they can just download a client somewhere and have fun on their own private server.
Does multiboxing in any way bring a single negative "thing" to the server? From what I've understood the players multiboxing are allowed to do so in PvE purposes. So take player A, who for whatever reason wishes to multibox. Player A will need to level 5-6 characters to 60, continiously harassed by the opposing faction as he/she is not allowed to utilize all characters in a pvp situation. When every character hits 60 after quite a while, the gearing process is going to take place.
Imagine for example someone multiboxing 6 mages, that player not only has spent a huge amount of time getting all characters to the max level. But in order to make the most out of each character he will amongst others need 6 rings from scholomance, and 6 turbans from UBRS. The amount of time this player is going to put in to each of his characters will by no doubt be substantial, whereas the player in every situation would have to adapt to other players who easily can grief him/her for hours/days/weeks/months.
Of course this griefing will surely be a part of the "multiboxing experience", but if a player wishes to level six characters to the max level and use them stricly in PvE content. With a journey that by no doubt contains a huge time investement where one of the few negative effects being other players whining/raging about a player controlling more characters than his "main". Then why shouldn't he/she be able to do so? I'm sure a lot of the players out there will create banks/alts on secondary accounts to easier manage what they gather, which will be a similar action in regards to the multiboxer who wants to do some PvE.
In regards to the topic owner's points;
"1. ...many of the activities performed by a multiboxer does not engage any other players of the server."
The same can be applied to the average player who as example farms gold, reagents, pvp, etc. I've still not engaged with another player back on ED when it comes to farming anything of the above, 18 months and counting.
"2. ...two broad categories"
I suppose you've never came across the helpful multiboxer who helped you farm a quest which noone bothered to help you with?
Harmless: "he is also useless, he does nothing to make the server better or worse"
An excellent point of view on other individuals, I'm sure average box of joe would spend most of his life during a few months just to in the end run some 5man dungeons and not experience the endgame.
Malicious: "actively disrupts server economy"
...by spending alot of time farming to afford 5-6x epic mounts. Compare the time spent leveling/gearing all the characters in comparison to the farm speed increase. I'd be more concerned of clever teleport hackers going after xyz, or players knowingly abusing bugs in order to gain a significant timeinvest-to-monetary advantage.
"PvP balance"
This is one of the few legit points, if a multiboxer is allowed to
engage in pvp then there could be serious concerns. If you however as a player make the decision in the same context to attack six characters that are allowed to
defend themselves in world pvp then well, best of luck stupid.
Endnote: I don't multibox characters above level 10. I do however consider playing more than one account at the same time as multiboxing, which I am sure the majority of players will do. Multiboxing is fine, the perception of it is not. Best of luck on the petition though.