If you are wearing one of the new faction tabards (e.g. Thunder Bluff, Stormwind, Orgrimmar, Ironforge, etc.), you will only receive reputation gains for that city/faction when in Classic (1-60), Northrend (70-80), and Cataclysm (80-85) dungeons. Outland dungeons will not currently provide reputation gains for the "home city" faction you are championing; this is intended.
Also, just as a heads up, if dungeon mobs and bosses are trivial to you, you will receive less reputation than if they are within your level range. This is just to ensure that players who exceed the dungeon's intended level range can still benefit from championing a specific faction, but aren't given a distinct advantage over those who are of the appropriate level and are unable to solo the content. This should also help encourage players to improve their reputation in dungeons more appropriate for their level, rather than running lower level content solely for the reputation (which isn't a bad thing by any means; we just want you to enjoy the content designed for your level range, too). :)
Aesthetic minor glyphs (Source Aesthetic Glyphs - Great Start Blizzard!)
We've enjoyed the few that have been made and really hope to continue on with them. A big issue is always time constraints, but the biggest hurdle is probably that we don't have the capability to alter spell effects directly with a glyph yet. The tech doesn't exist for us. Swapping out models, like the two you mentioned, are somewhat easy as long as we like the actual effect and want it in the game. Changing fire to be colored green though, while awesome, isn't as easy.
Some of the things you mentioned are certainly possible, some are quite like never going to happen, and some we just need the tech to pull it off. :)
We do indeed though hope to keep adding aesthetic minor glyphs.
Upcoming realm status page (Source Realm Status)
The page itself has undergone some key improvements. Realms will now be sortable by status, name, type (Normal, PvP, RP, RP-PvP), population, locale (i.e. time zones: Pacific, Mountain, Central, and Eastern), and current queue. Also, when you're logged in, there will be a separate tab that will display the most relevant realms based on where your characters are, allowing you to quickly reference the status of the realms on which you play. :)