In the comments of yesterday's edition of The Queue, Gilgamesh mentioned that you're actually able to attack the projection of Mr. Bigglesworth in Wintergarde Keep, or at least, you could for a long time. It's inspired me to... tell a little story.
Once upon a time, The Queue was Ask a Beta Tester. We were still in the midst of exploring Northrend before every Joe and Jane could waltz in there, and I was a puny level 71 traipsing all over the world and taking in its beauty. Ohh! Dragons! Ooo! Yetis! Oh look, hehe, there's a kitty on the projector! Let's click on it!
Oh no! Oh nooo! It's attacking me! Oh gosh, it's just a critter, I can just 1-shot it. Unfortunately for me, it was level 80, and I was a level 71 caster. It resisted absolutely everything. I ran around Wintergarde flailing my arms in horrified desperation, hoping and praying it would leash and leave me be. Unfortunately, it did not, but I had healing spells and managed to weather its furious paws until my Prot Paladin friend showed up to tank it for me. Not my proudest moment, that's for sure.
What is the gear progression for someone just leveling to 60 for the first time. Are the early tiers still viable? Or have they all been rendered moot by the expansions?
Should I rely on quest reward gear until I'm able to raid Naxx or should get the earlier tiers along the way?
You absolutely do not need to worry about tier gear before level 80. It's all been made moot and obsolete by the expansions, like you said. If you really want to get that gear, it's available, but the effort isn't worth the reward. You can use quest gear straight to level 80.
I highly recommend doing some dungeons between level 70 and 80, though. If you've never done any dungeons at all on the way to 80, leaping straight into Naxx is not recommended. You'll want to get a little bit of gear first. Naxx is pretty simple nowadays, but not so easy that you want to go in without any gear or experience at all.
Does Blizzard have any plans to expand the "RP Clothes" portion of the game? More low level armor/weapon/fluff models for us RPers to use. What's your opinion on the subject?
Well, we certainly don't know what goes on in Blizzard's head, so I don't know what they plan on adding in the future. They're adding stuff all of the time, though. There's already a huge, huge variety of armor of various levels that you can mix and match to fit your character's style/personality, and they add vanity items pretty often, too. Not a ton of them, but it's there.
My favorite recent addition is the Wound Dressing and Antiseptic-Soaked Dressing from Dalaran, that were added in Wrath. It's perfect for the 'oh noes I'm injured' RP that we've all had at least once, and typically far more often than that. There are a ton of RP props out there as far as items go, and they add more all of the time. You just need to look for them. PvE items certainly aren't banned from being used in RP.
Recently I saw an astonishing message come up: "Dalaran is under attack." How is that possible? It's a sanctuary, you can't attack anyone/guards even if you wanted to, right?
It's possible to sneak into the opposite factions' sides of Dalaran, and both factions have a single NPC you can kill in the area you use to queue up for Battlegrounds. The Horde Warbringer and the Alliance Brigadier General are still flagged for PvP, and the hidden Sanctuary buff doesn't protect them. As long as they don't get too close to the fellas that'll portal them out of there, they can kill the guy over and over without any repercussions. Kind of annoying, and I fear I've doomed every server in the world to it happening endlessly now that I've mentioned it here.
I apologize in advance.