Ok, the purpose of this thread is simple... Eventually, as the guild's tag system evolves, more and more requests will come in for fairly unique tags. Rather than constantly cluttering [@Mahz] [url=http://www.roleplayerguild.com/topics/75056-mahzs-dev-journal/ooc]Dev Journal[/url] with said requests, we figure it would be good to have a single topic where people can request tags, and of course potentially discuss the merits of whether a certain fandom/theme/goblin should get its own tag.

[hider=Already Existing Tags]
[h3]Writing style[/h3]
[b]Current:[/b] Free, casual, advanced
[b]Suggested:[/b] High/low free, high/low casual, high/low advanced
[h3]Party Size[/h3]
[b]Current:[/b] 1x1, Small group, Large group
[b]Suggested:[/b]
[h3]Recruitment status[/h3]
[b]Current:[/b] Apply, Jump-in, Full
[b]Suggested:[/b]
[hider=Genre]
[h3]current:[/h3]
Modern
Sci-fi
Slice of Life
School
Historical
Tabletop
Nation
Arena
Military
Romance
Fantasy
Fandom
Anime/Manga
Steampunk
Apocalyptic
Post-apocalyptic
[/hider][/hider]

Recently proposed by [@Mahz] is the system of having a small set of official guild tags that are fairly static, defining the general category of an RP. These tags would define what level of writing is expected in an RP (Free, casual, Advanced), whether it is a regular RP with single characters, a nation, an arena match, a 1x1, or such, and the general genre of the RP (Sci-fi, Fantasy, Anime, Fandom, etc.)

The second system of tags, which would be subordinate to this is will be community-defined. This can be anything from established universes  like Star Wars, Mass Effect & DC Comics to the stranger stuff like Jupiter, Birthing and ReverseBirthing (Ask [@Mahz] what that is if you want to know. It was his idea). In essence, whatever the community wants. 

But to keep the community tag system viable and not bloated with tags that only have 1-2 RPs to them, which would not help a search function much, the tags would be moderated, either through an approval system, or through other means. Ideas for how that is best done are very welcome.

Anyways, on to the tags that have been suggested.

[hider=Suggested Genre tags]
Superhuman
Paranormal
Mystery
Horror
Western
Psychological
Sandbox
World-builder
Earth
Other planet(s)
Animalia
Vampires
[b]Soft sci-fi[/b] - science fiction with only minimal ties to known science. Can include things like time travel, faster-than-light travel and so forth. Doesn't explain how its done, only that this or that fancy-named machine does it. 
[b]Hard sci-fi[/b] - Science fiction where the science is kept as close as possible to the real thing. ruled by the laws of physics, but generally doesn't show the maths involved.
[b]Science Fantasy[/b] - Not quite sci-fi nor quite fantasy. Or both mixed thoroughly.
[b]Low Fantasy[/b] - Fantasy with minimal magic involved, often has few or no sentient non-human species.
[b]High Fantasy[/b] - The opposite of low fantasy: Magic has major effects, might be very common and there can be many sentient species.
[b][u]Era tags:[/u][/b]
[indent]Ancient World
Medieval
Victorian
Modern
Near future
Far future
Multiverse
Murder
[/indent][/hider]

[b]Some fandom-specific genres have also been suggested:[/b]
Star Wars
Marvel comics
DC comics
Pokemon
Elder Scrolls
Mass effect
Harry Potter

There has also been suggested a type of "tonal" tags, to define what sort of story in a certain setting it is. For example, a fantasy RP can be both comedic, grim and epic.
[hider=Tonal tags]
Light
Dark/Grim
Dystopian
Comedic
Epic
Drama
Tragedy
Action
Adventure
Survival
Abstract
Experimental
[/hider]

Players might want to find RPs that do their best to stick to Canon fandom, or perhaps they'd rather avoid messing with Canon or other things like that. The following suggestions cover that.
[hider=Originality]
Canon Fandom
Non-canon Fandom
Loosely Inspired
Utterly Original[/hider]

[hider=Arena]Unpowered
Powered
High Powered
God
2vs2
Tournament
Story
Practice
[/hider]

Have any other suggestions? Don't hesitate to post them.