We'come to the guild, [@Marayla].

To answer your questions:
#1 (OP characters): Not true. Or at least not universally true. Some sections are more prone to misunderstandings than others. In the advanced section, you probably won't find many GMs who do not know how to poke holes in overpowered characters. We certainly deal harshly with OP characters when we get them thrown at us.

#2 (fangirl rants): If it engages people, then such rants will probably be read. There's so many different people here, so there's bound to be others who share such opinions.

#3 (power distribution): The real power hereabouts lies in the hands of the Guild's Dark Overlord, Mahz, and the moderators. They're all nicely behaved, so you normally do not need to worry about them. There are a number of other people with influence, but none who truly need to be feared. The last category don't have any direct power over the guild itself. If you behave in a fair and cool fashion (like the Fonz) you'll be all good and not get in trouble with the staff.

The only thing you really need to make sure is that RPs of a more... erotic... nature need to be run in private messages, due to the way the Guild is funded (adsense). 

How long do you see yourself writing? a line or three, a paragraph or three, more?
How important is correct grammar for you?

Do you prefer to RP in a group or with one other?