I don't see how wow is loosing it's "mmo feeling" (lol), and tbh OP, your arguments are a bit illogical to say the least:
-just because you can solo que LFR/LFD, that does not mean you do "everything solo"....cause there are 24 other people in raid with you putting effort into it (DUH!)
-flying is there, but at least on high pop servers, I guarantee you there are lots of "bumps" between players. Don't trust me? Just check all the QQ threads about people not completing dailies cause of enemy attacks.
-ofc you need summon....don't be ridiculous. You either said that out of ignorance, either you don't really raid...at all.
-Guilds are more important than ever if you want to achieve something. But if all you do is LFR/LFD and a few rbgs / bgs for the weekly cap, than guilds are not important for you. But for serious raiders / pvpers, a guild is more than a NEED....it's a MUST.
Oh and regarding the "staying in the city to spam tradechat for invs"...I don't know where you play man, but come on stormscale and try to type something into tradechat. You won't even be able to see your text from all the other groups spamming their LFM's for raids / rbgs / achieves run...you name it.