the worst dreams that ever I have are when I hear the chalk scraping about its blackboards, or start upright in bed, with the sharp voice of Professor Flint still ringing in my ears: “Pieces of homework! pieces of homework!”

I'd upvote if you could embellish that last bit. I.e. is that the only reason why you think they'd have an enforced style? Would you consider that “artificially complex”?

However, those are the titles for specialized jobs in their respective industries. They would only limit their description to those titles if context called for it.

Wow, this title was bizarre.

I know that other answers addressed the more colloquial uses of the words, but I thought the etymological details were either lacking or incorrect.

That makes sense; I yet think the question is poorly formulated. Would the actors be “disappointed in” their director, or ‘disappointed by’ the director's response? Was their expectation that their performances would be received well, or that this specific director would be able to correctly assess their performance? The question implies that the actors know their performance is good, and do not approve of their director's failure to recognize that fact — hmm, actually, maybe it isn't that far off …

For what dialect or vocabulary is this question meant to gauge your fluency, exactly? Anyway, none of the first three choices seems consistent with the second sentence. ‘unhappy with’, ‘uncomfortable with’, ‘berated by’, or even ‘at odds with’ work better.

Two more single–word substitutions which may be adequate, depending on the voice and vernacular of the speaker: such, this — also given in another answer — and the plural form these. Moreso specific pronouns could be preferable if the context support them; examples: my, your, our. Also, the plural form of ‘that’ could be useful to avoid the visual homonymic repetition: those.