Thankless or not, they do it because they want to. They want to be in charge, they want to make the decisions, they want to lead. They want the extra work... or they wouldn't do it in the first place. I don't think a guild tax should be used to "reward" the GMs at all, but rather be used to fund consumable purchases/creation to help the guild overall.

Guilds should be able to do this.. why not? No one is forced to stay in the guild if they don't like the tax system that is in place. If it's worth it to them to stay in, they will... if not they can leave.

The reward is that the GL sets the tone of the guild in such a way that they are able to accomplish things within the game that suit them... and through marketing their particular in game preferences to other players, they are able to secure a group of likeminded players to help them reach their own personal goals.

Yes, it is a lot of hard work... but the payoff (if you are a good leader) is that you will get where you want to go in the game because you are at the wheel.

I would expect the tax amount would be set based on Rank, so there would be a raiding rank, so that Alts wouldnt be subjected to that kind of tax.

because no one would have their AH mule in the guild.

which in itself, istn a bad thing, if your into making money , and people know who your AH alt is, they would ask for a better price :)

well u shouldnt reward all GM's as many good ones that are out there, there are way more bad ones. ppl who do nothing for the guild and dont help do anything for non-raiding members. the little guys need more help than anyone....lol the point is that there are many GM's that get that power trip.

I agree, but taxation is a wholly ignorant way to give incentive to guild leaders, and guilds to be guilds.
Maybe blizzard should revamp the guild system so that there is some incentive to being in one, instead of the way it is now, where there is no incentive to remain loyal to guilds past the point that you get the gear you want.

It's their game design that did this, not a lack of being able to tax guild members for whatever reason there may be to do so.

They already do, it's called the G-Bank, who do you think walks away with all that shit 90% of the time when the eventual g-disband happens?