I like that thread. I really do

It's diverse and yet stays on topic more or less.
As I'm completely unimportant and uninvolved in this matter, I shall give my two tria

I fear I have to make a longer statement, sorry for a longer read.
When you are GMing, you are not a player.
Right. That has a few consequences that I will lay out in the following.
Let's see. On one side we have the players. Players are supposed to play the game (and help with testing, but that's not important here) and have fun.
When GMing, you are not online to have fun, but to do your duty, which is:
#1 Moderate player issues.
#2 Promote RP.
#3 Help in testing and other development aspects.
The important part here is undoubtably #2. Now there are two particular cases defined for GMs to fulfill this purpose: a) throwing events and b) help players with their RP.
In the past we did both, a) and b). Nowadays we focus on a). Why? Because the accusation of favouritism (regretfully rightfully) was risen.
That doesn't mean that with a) no favouritism can happen, right. But in those cases it's much easier to detect and get rid of it. How can favouritism happen in player events?
The truth is that GMs *have* friends and people who they like more than others. In matters of rules and moderation this can be circumvented in general by having others handle problems that would obviously call for preoccupation. In matters of RP this is not so easy, as there is no obvious pressure to be uninvolved with the participants.
If you now ask for GMs to become involved with specific RP as player, who would they tend to help in the first place? Right, people who they know and consider good RPers.
Now it is very arguable if those people should get rewards for good RP like PP as we (obviously) don't have a good measure of what is good RP and what is not - just take the many, many discussions on this forum about just this matter.
Here I must say that we GMs mostly have the same idea of what is good RP and what is not, but how to communicate that to players who complain that they don't get help for theirs? In those cases the accusation of favouritism is the next argument - whether right or wrong - and hard to prove wrong.
A small sidenote: The settings as they are laid out on planeshift.it are "reality". You can't argue against the correctness of this information OOC (but of course IC). The *ingame books* are material to RP with and can be argued OOC and IC. Even more so you can debate statements from NPCs.
Second: Both gods (Laanx and Talad) are not supposed to be really present right now in the world, thus impersonating them for such a low cause as denying their existance and calling for prove would be just bad style (except Laanx is bored and likes to smite someone

). On the other side, plundering the temple is a serious matter, but can also be solved without impersonation of a god.
Thirdly: I personally would kick any GM from the team who bans a char for the sake of realism of RP alone. That would be clear abuse and is unacceptable.
Back on topic: Why don't we get involved with RP of players?
As already stated pretty clear by Seytra and others, RP that is supported by GM powers automatically is regarded as official and as measuring rod for others.
But there are different levels of involvement.
Bannage for RP sake clearly is one extreme. Handing out items and PP as reward for RP can be cause of accusations, as said above.
There are also other, "minimal-invasive" means to support RP. The simplest one is verbal "pats on the backs" for good RP or also verbal help in the current RP with advises.
Another is /impersonating NPCs and descriptive actions in the world. This basically means that the GM gets involved with the RP, but not visibly and also not giving rewards.
I see these two minimal-invasive means as upper limit of direct involvement of a GM within a player-driven event - and at the same time as most important aspects of promoting RP.
Everything beyond that needs quality assurance and backup from the settings, otherwise it's just unprofessional.
A last point about labels:
Yes, labels draw attention and make people drop their char personality for yellow label's sake. And yes, we don't like that. It is also true that sometimes the number of participants within an event that was supposed to be small is unrealistic from RP viewpoint.
We will look into the feasibility of having small events without GM labels (and with low rewards) but making it clear at the end of the event that it was official - opposed to "epic" events that also require a lot of participants, where the attention-drawing effect of the labels might be handy.
This also goes within the plan of having more diverse events, so all char-personalities can be involved one time or the other without dropping their usual role.