I didn't mind Vega dropping the occasional Spanish word, but Maeko Matsuo's dialogue was so bad it was almost painful. She was written how someone in the West thinks Japanese people talk rather than how they actually speak. She sounded like a cast member from the miniseries Shogun.
Agree with this... Vega was totally fine. Plus FPJ is latino so his voice acting was really good for Vega. He pulled it off. Where I live we have "ethnic" names for family members that we use around others sometimes and it confuses them. So that is normal; you do it without thinking.
On the other hand, globalization tends to weed out these little colloquial words and phrases and accents. Me with my fancy-shmancy education will use fewer regional words and phrases than, say, my cousin who didn't go to college and never left the hometown. So maybe it does seem off for a man so far in the future, surrounded by aliens and hailing culturally from not just a globalized but galactic Earth to still be talking like that. /shrug
As for Matsuo, ugh, yes, that was... painful. And then there's Kai Leng with his ninja sword /eyeroll
Cliches and tropes I hope ME4 avoids...
1. The villain who is bad just to be bad / hungry for power.
No afraid of this too much since TIM was a fantastic villain; his goal, or what he believed was his goal, was the betterment of humanity, and he was willing to do anything to achieve that. Then came the indoctrination and so on. He was so not generic. Same with Sovereign. Sovereign didn't believe it was a god; it essentially WAS a god. It was very pragmatic about what it had to do. It was also beyond the understanding of the player character as well as the player! Truly awesome villains (the reapers).
I'm hoping to avoid crap villains like Corypheus, but that's the DA team. Problem is, a lot of the old ME team have been replaced. So I am a "little" worried.
2. Character tropes:
The sexy and seductive ice queen - a.k.a. Morrigan, Miranda, etc.
What can i say, it's just a trope I hate. It feels too fan service. Plus I've never met an actual person who fits that trope. It seems purely fantasy. Female characters are always more likely to be less developed than male characters.
The saucy bisexual/gay man - Zevran, Isabela, Dorian
ME series has always been great about avoiding sexuality tropes so I'm not really worried about this at all. It's more of a DA thing.
The hardened male veteran - Wrex, Loghain, Zaeed
"I've seen too much and I'm hard and bitter and blah blah blah" I think it's unfair of me to put Wrex in this category because he's actually a fantastic character, really well-developed. But yes, the hardened soldier type. Bleh.
The cute girl - Merrill, Leliana, Tali
Again, this seems like more of a love interest option tailored to appeal to the player than a real person. I don't know anyone in real life who fits that trope.
Really when it comes to characters I think ME series has done an excellent job at avoiding stereotype. I didn't mention Jack, the "bad girl" with the shaved head, tattoos, foul mouth, and tragic past. She was a walking cliche (and yet I do like her). So they do strike out sometimes. But most of the time they create very realistic and well-rounded characters.
Liara gets a lot of heat, but honestly, she seems real to me. I know and have encountered lots of people like her... nerdy, easily distracted, intelligent, but also very warm. She just happens to be in a sexy package because she's asari and she's romance-able.