There are a lot of us who don't want to look like morons chatting into a headset while playing video games. I get enough grief from my wife for playing video games as it is.
My wife can't stand when I game with a headset on unless it's so repeating phrases don't bug the crap out of her (as in "acknowledged", "moving out", etc... in RTS)... So unless I'm playing an RTS the headset is off (unless she's not home of course) because she said it makes her percieve I'm ignoring her more than I already am by focusing on a game.
I gave team speak a try once while the wife was watching TV. I said something like "Guys, i'm not getting any buffs tonight" to which my wife butted in and said "don't worry it's not the only thing you wont be getting tonight".... I rest my case :/
Aaaand my will in finding a wife has decrease another 30%. I'm not even joking, if anyone think I'm making an attempt at humor.
Back on topic, as my friends haven't started playing yet I can't really tell if I have a problem with this or not,and I haven't joined any linkshell either. Perhaps I should give it a try. I had a problem responding to a /tell during combat and crafting pre-patch, but I thought it was slightly improved.
On the issue of partying, I haven't even touched my DoM for a looong while now. The party and combat moves too quickly I found. I don't think the FFXI way (pulling an Impossible to Gauge mob) works anymore, as they usually one-shot the tank (in my experience). I would prefer the middle ground between FFXI and FFXIV and have the combat last a bit longer.