"Less alienating? You mean "less Greek."
Do you not think it is alienating to ask the congregation to respond in another language but then not provide sufficient materials so that they can do so?
You also asked:
"but why shouldn't a Greek church keep its Greek language, either in full or in part?"
I'm not saying they shouldn't, Scamandrius. I'm saying they should provide transliterated materials so that non-Greek speakers can participate in the liturgy even if they don't know the language.
"If language is such a big deal, then they are free to go to an OCA or Antiochian parish where English is far more common."
You are fortunate enough to live in a city where those are options. I do not. There are many communities across the U.S. and even in the Midwest where the Greek church is the only Orthodox church in town.