Sometimes MCmmo annoys me for some of the reasons listed
Regarding factions or player to player, I prefer faction or ally roleplay. The reason is peoples lack of effort. I keep seeing that oh so common guy in a hoodie with a headset lately, that has nothing to do with anything roleplay. If they don't get a skin for their roleplay character, it gets confusing in the beginning. You should be able to identify some things when you first see a player, otherwise you will have an awkward conversation like this.
(In a bar)
Me: Greetings, good sir. A man like yourself must be tired after a journey, why don't ye sit with me, and have a pint?
Stranger: I'm a girl, and I'm also an orc. But I bet you didn't know that because of this 'creeper in a suit' skin I downloaded.
Because of that I don't enjoy interacting with complete strangers a whole lot, I prefer to carefully choose people to roleplay with, mainly with factions, or friends and such.
Also I met a 'vampire' once, I noticed when he caught on fire in Silveredge, and (in character) I made a comment about how he is scum, and should cleanse himself at an altar. He replied with some snarky comment, saying "Chill, it's just a game dude" or something along those lines.